PLEASE HELP!! URGENTT

Answer:
ST = 164.21 m
Step-by-step explanation:
The fraction RU/UV have to be equal to RS/ST, because the triangles are similar:
190/120 = 260/ST
Multiply both sides by ST:
190ST/120 = 260
Multiply both sides by 120:
190ST = 260•120
Divide both sides by 190:
ST = 31200/190
ST = 164.21 m