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Finding the Fourth Proportional to 126,874.80, 175,105.86 and 73,149.30

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Solution

The fourth proportional to 126,874.80, 175,105.86 and 73,149.30 is: 100,956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,874.80 : 175,105.86 = 73,149.30 : x
  2. Step 2: Convert to fraction form
    126,874.80/175,105.86 = 73,149.30/x
  3. Step 3: Cross multiply
    126,874.80x = 175,105.86 × 73,149.30
  4. Step 4: Simplify right side
    126,874.80x = 12,808,871,084.90
  5. Step 5: Solve for x
    x = 12,808,871,084.90/126,874.80
  6. Step 6: Final answer
    x = 100,956.78

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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.