Finding the Fourth Proportional to 156,532.62, 216,010.12 and 87,622.06
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Solution
The fourth proportional to 156,532.62, 216,010.12 and 87,622.06 is: 120,915.70
Step by Step Solution
- Step 1: Write the proportion equation
156,532.62 : 216,010.12 = 87,622.06 : x - Step 2: Convert to fraction form
156,532.62/216,010.12 = 87,622.06/x - Step 3: Cross multiply
156,532.62x = 216,010.12 × 87,622.06 - Step 4: Simplify right side
156,532.62x = 18,927,251,695.25 - Step 5: Solve for x
x = 18,927,251,695.25/156,532.62 - Step 6: Final answer
x = 120,915.70
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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.