Finding the Fourth Proportional to 156,761.26, 216,332.10 and 85,142.68
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Solution
The fourth proportional to 156,761.26, 216,332.10 and 85,142.68 is: 117,497.75
Step by Step Solution
- Step 1: Write the proportion equation
156,761.26 : 216,332.10 = 85,142.68 : x - Step 2: Convert to fraction form
156,761.26/216,332.10 = 85,142.68/x - Step 3: Cross multiply
156,761.26x = 216,332.10 × 85,142.68 - Step 4: Simplify right side
156,761.26x = 18,419,094,764.03 - Step 5: Solve for x
x = 18,419,094,764.03/156,761.26 - Step 6: Final answer
x = 117,497.75
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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.