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Finding the Fourth Proportional to 156,331, 215,753.18 and 95,887.79

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Solution

The fourth proportional to 156,331, 215,753.18 and 95,887.79 is: 132,335.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,331 : 215,753.18 = 95,887.79 : x
  2. Step 2: Convert to fraction form
    156,331/215,753.18 = 95,887.79/x
  3. Step 3: Cross multiply
    156,331x = 215,753.18 × 95,887.79
  4. Step 4: Simplify right side
    156,331x = 20,688,095,615.67
  5. Step 5: Solve for x
    x = 20,688,095,615.67/156,331
  6. Step 6: Final answer
    x = 132,335.21

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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.