Home / 87,988.60-131,723.70-82,862.20

Finding the Fourth Proportional to 87,988.60, 131,723.70 and 82,862.20

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Solution

The fourth proportional to 87,988.60, 131,723.70 and 82,862.20 is: 124,049.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,988.60 : 131,723.70 = 82,862.20 : x
  2. Step 2: Convert to fraction form
    87,988.60/131,723.70 = 82,862.20/x
  3. Step 3: Cross multiply
    87,988.60x = 131,723.70 × 82,862.20
  4. Step 4: Simplify right side
    87,988.60x = 10,914,915,574.14
  5. Step 5: Solve for x
    x = 10,914,915,574.14/87,988.60
  6. Step 6: Final answer
    x = 124,049.20

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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.