Will a 100ft/ 200ft ethernet cable work well.

Hello so i just got xfintiy 105mbps installed(somehow they gave me 150mbps??) and its all they way in the other room down the hall and the wireless sucks(only like 7-20mbps(sometimes) so will the 100ft/200ft wire lose signal,mbps or be slower than a 25ft cable.
 


never mind did exact measurements only like 44ft so i will buy a 50ft is that okay.