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Finding the Fourth Proportional to 87,466.80, 131,200.20 and 82,655.40

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Solution

The fourth proportional to 87,466.80, 131,200.20 and 82,655.40 is: 123,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,466.80 : 131,200.20 = 82,655.40 : x
  2. Step 2: Convert to fraction form
    87,466.80/131,200.20 = 82,655.40/x
  3. Step 3: Cross multiply
    87,466.80x = 131,200.20 × 82,655.40
  4. Step 4: Simplify right side
    87,466.80x = 10,844,405,011.08
  5. Step 5: Solve for x
    x = 10,844,405,011.08/87,466.80
  6. Step 6: Final answer
    x = 123,983.10

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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.