Finding the Fourth Proportional to 135,473.26, 202,385.92 and 87,699.15
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Solution
The fourth proportional to 135,473.26, 202,385.92 and 87,699.15 is: 131,015.33
Step by Step Solution
- Step 1: Write the proportion equation
135,473.26 : 202,385.92 = 87,699.15 : x - Step 2: Convert to fraction form
135,473.26/202,385.92 = 87,699.15/x - Step 3: Cross multiply
135,473.26x = 202,385.92 × 87,699.15 - Step 4: Simplify right side
135,473.26x = 17,749,073,695.67 - Step 5: Solve for x
x = 17,749,073,695.67/135,473.26 - Step 6: Final answer
x = 131,015.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.