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Finding the Fourth Proportional to 123,062.92, 169,869.02 and 72,092

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Solution

The fourth proportional to 123,062.92, 169,869.02 and 72,092 is: 99,511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,062.92 : 169,869.02 = 72,092 : x
  2. Step 2: Convert to fraction form
    123,062.92/169,869.02 = 72,092/x
  3. Step 3: Cross multiply
    123,062.92x = 169,869.02 × 72,092
  4. Step 4: Simplify right side
    123,062.92x = 12,246,197,389.84
  5. Step 5: Solve for x
    x = 12,246,197,389.84/123,062.92
  6. Step 6: Final answer
    x = 99,511.68

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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.