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Finding the Fourth Proportional to 123,360.33, 170,238.68 and 72,373.97

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Solution

The fourth proportional to 123,360.33, 170,238.68 and 72,373.97 is: 99,876.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,360.33 : 170,238.68 = 72,373.97 : x
  2. Step 2: Convert to fraction form
    123,360.33/170,238.68 = 72,373.97/x
  3. Step 3: Cross multiply
    123,360.33x = 170,238.68 × 72,373.97
  4. Step 4: Simplify right side
    123,360.33x = 12,320,847,906.10
  5. Step 5: Solve for x
    x = 12,320,847,906.10/123,360.33
  6. Step 6: Final answer
    x = 99,876.90

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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.