Finding the Fourth Proportional to 117,120.87, 161,628.08 and 63,407.03
Calculator
Solution
The fourth proportional to 117,120.87, 161,628.08 and 63,407.03 is: 87,502.38
Step by Step Solution
- Step 1: Write the proportion equation
117,120.87 : 161,628.08 = 63,407.03 : x - Step 2: Convert to fraction form
117,120.87/161,628.08 = 63,407.03/x - Step 3: Cross multiply
117,120.87x = 161,628.08 × 63,407.03 - Step 4: Simplify right side
117,120.87x = 10,248,355,392.23 - Step 5: Solve for x
x = 10,248,355,392.23/117,120.87 - Step 6: Final answer
x = 87,502.38
Related Problems
Find fourth proportional to 58,560.44, 80,814.04 and 31,703.51
Half scale
Find fourth proportional to 234,241.74, 323,256.15 and 126,814.05
Double scale
Find fourth proportional to 117,121.87, 161,629.46 and 63,408.03
Similar ratio
Find fourth proportional to 175,681.31, 242,442.11 and 95,110.54
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.