Home / 87,991.10-131,727.45-82,864.70

Finding the Fourth Proportional to 87,991.10, 131,727.45 and 82,864.70

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Solution

The fourth proportional to 87,991.10, 131,727.45 and 82,864.70 is: 124,052.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,991.10 : 131,727.45 = 82,864.70 : x
  2. Step 2: Convert to fraction form
    87,991.10/131,727.45 = 82,864.70/x
  3. Step 3: Cross multiply
    87,991.10x = 131,727.45 × 82,864.70
  4. Step 4: Simplify right side
    87,991.10x = 10,915,555,626.02
  5. Step 5: Solve for x
    x = 10,915,555,626.02/87,991.10
  6. Step 6: Final answer
    x = 124,052.95

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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.