The ratings are in for The 100 fourth season finale, Praimfaya. You can see them below.
The 100 The Chosen which aired May 17th, scored a 0.3 in the 18-49 demographic and a 0.83 in audience.
The 100 Praimfaya scored a 0.3 in the 18-49 demo, and a 0.98 in the audience.
The 100 has been renewed for season five by the CW. It will debut February 2018.