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Finding the Fourth Proportional to 156,474.50, 215,932.10 and 88,489.17

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Solution

The fourth proportional to 156,474.50, 215,932.10 and 88,489.17 is: 122,113.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,474.50 : 215,932.10 = 88,489.17 : x
  2. Step 2: Convert to fraction form
    156,474.50/215,932.10 = 88,489.17/x
  3. Step 3: Cross multiply
    156,474.50x = 215,932.10 × 88,489.17
  4. Step 4: Simplify right side
    156,474.50x = 19,107,651,862.91
  5. Step 5: Solve for x
    x = 19,107,651,862.91/156,474.50
  6. Step 6: Final answer
    x = 122,113.52

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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.