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Finding the Fourth Proportional to 87,585.80, 131,184.30 and 75,921.80

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Solution

The fourth proportional to 87,585.80, 131,184.30 and 75,921.80 is: 113,714.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,585.80 : 131,184.30 = 75,921.80 : x
  2. Step 2: Convert to fraction form
    87,585.80/131,184.30 = 75,921.80/x
  3. Step 3: Cross multiply
    87,585.80x = 131,184.30 × 75,921.80
  4. Step 4: Simplify right side
    87,585.80x = 9,959,748,187.74
  5. Step 5: Solve for x
    x = 9,959,748,187.74/87,585.80
  6. Step 6: Final answer
    x = 113,714.19

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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.