Home / 87,817.60-131,726.40-86,651.20

Finding the Fourth Proportional to 87,817.60, 131,726.40 and 86,651.20

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Solution

The fourth proportional to 87,817.60, 131,726.40 and 86,651.20 is: 129,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,817.60 : 131,726.40 = 86,651.20 : x
  2. Step 2: Convert to fraction form
    87,817.60/131,726.40 = 86,651.20/x
  3. Step 3: Cross multiply
    87,817.60x = 131,726.40 × 86,651.20
  4. Step 4: Simplify right side
    87,817.60x = 11,414,250,631.68
  5. Step 5: Solve for x
    x = 11,414,250,631.68/87,817.60
  6. Step 6: Final answer
    x = 129,976.80

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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.