Peter Jackson's Hobbit films attempt to make a link to the Lord of the Rings in almost every way possible. However, it seems that Jackson has slipped up in the final instalment.
Legolas (Orlando Bloom) is told by his father Thranduil (Lee Pace) to go seek out a young ranger from the North who is known as Strider, as he may go on to become a "great".
In the book Aragorn would only be about ten years old at this time, and not the young warrior alluded to in this segment of the film. In the books, Aragorn's age at the time of Bilbo's passing through Rivendell at the start of his journey is precisely fixed at 10 years old. You can look it up in Appendix B of the Lord of the Rings The Return of the King.
Bilbo was clearly 111 (eleventy-one) at his farewell birthday party. In the book, it's another 17 years before Frodo leaves the Shire. You could argue that this isn't the case in the films, but that is essentially removing 17 years of Middle Earth? It is also worth mentioning that Viggo Mortensen refused the opportunity to appear in these films and perhaps his wishes should have been respected?