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Finding the Fourth Proportional to 156,761.56, 235,146.80 and 38,432.80

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Solution

The fourth proportional to 156,761.56, 235,146.80 and 38,432.80 is: 57,650.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,761.56 : 235,146.80 = 38,432.80 : x
  2. Step 2: Convert to fraction form
    156,761.56/235,146.80 = 38,432.80/x
  3. Step 3: Cross multiply
    156,761.56x = 235,146.80 × 38,432.80
  4. Step 4: Simplify right side
    156,761.56x = 9,037,349,935.04
  5. Step 5: Solve for x
    x = 9,037,349,935.04/156,761.56
  6. Step 6: Final answer
    x = 57,650.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.