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Finding the Fourth Proportional to 87,512.60, 131,301.30 and 84,272.60

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Solution

The fourth proportional to 87,512.60, 131,301.30 and 84,272.60 is: 126,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,512.60 : 131,301.30 = 84,272.60 : x
  2. Step 2: Convert to fraction form
    87,512.60/131,301.30 = 84,272.60/x
  3. Step 3: Cross multiply
    87,512.60x = 131,301.30 × 84,272.60
  4. Step 4: Simplify right side
    87,512.60x = 11,065,101,934.38
  5. Step 5: Solve for x
    x = 11,065,101,934.38/87,512.60
  6. Step 6: Final answer
    x = 126,440.10

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1.5x scale

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.