Home / 87,919.57-131,502.57-81,537.97

Finding the Fourth Proportional to 87,919.57, 131,502.57 and 81,537.97

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Solution

The fourth proportional to 87,919.57, 131,502.57 and 81,537.97 is: 121,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.57 : 131,502.57 = 81,537.97 : x
  2. Step 2: Convert to fraction form
    87,919.57/131,502.57 = 81,537.97/x
  3. Step 3: Cross multiply
    87,919.57x = 131,502.57 × 81,537.97
  4. Step 4: Simplify right side
    87,919.57x = 10,722,452,607.58
  5. Step 5: Solve for x
    x = 10,722,452,607.58/87,919.57
  6. Step 6: Final answer
    x = 121,957.52

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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.