Finding the Fourth Proportional to 107.20, 147.93 and 58.08
Calculator
Solution
The fourth proportional to 107.20, 147.93 and 58.08 is: 80.14
Step by Step Solution
- Step 1: Write the proportion equation
107.20 : 147.93 = 58.08 : x - Step 2: Convert to fraction form
107.20/147.93 = 58.08/x - Step 3: Cross multiply
107.20x = 147.93 × 58.08 - Step 4: Simplify right side
107.20x = 8,591.19 - Step 5: Solve for x
x = 8,591.19/107.20 - Step 6: Final answer
x = 80.14
Related Problems
Find fourth proportional to 53.60, 73.97 and 29.04
Half scale
Find fourth proportional to 214.40, 295.86 and 116.15
Double scale
Find fourth proportional to 108.20, 149.31 and 59.08
Similar ratio
Find fourth proportional to 160.80, 221.90 and 87.11
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.