Home / 87,843.31-131,896.18-86,531.11

Finding the Fourth Proportional to 87,843.31, 131,896.18 and 86,531.11

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Solution

The fourth proportional to 87,843.31, 131,896.18 and 86,531.11 is: 129,925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,843.31 : 131,896.18 = 86,531.11 : x
  2. Step 2: Convert to fraction form
    87,843.31/131,896.18 = 86,531.11/x
  3. Step 3: Cross multiply
    87,843.31x = 131,896.18 × 86,531.11
  4. Step 4: Simplify right side
    87,843.31x = 11,413,122,200.68
  5. Step 5: Solve for x
    x = 11,413,122,200.68/87,843.31
  6. Step 6: Final answer
    x = 129,925.92

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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.