Finding the Fourth Proportional to 156,432.08, 215,819.70 and 102,746.20
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Solution
The fourth proportional to 156,432.08, 215,819.70 and 102,746.20 is: 141,752.60
Step by Step Solution
- Step 1: Write the proportion equation
156,432.08 : 215,819.70 = 102,746.20 : x - Step 2: Convert to fraction form
156,432.08/215,819.70 = 102,746.20/x - Step 3: Cross multiply
156,432.08x = 215,819.70 × 102,746.20 - Step 4: Simplify right side
156,432.08x = 22,174,654,060.14 - Step 5: Solve for x
x = 22,174,654,060.14/156,432.08 - Step 6: Final answer
x = 141,752.60
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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.