Home / 87,113.30-130,767.15-81,402.80

Finding the Fourth Proportional to 87,113.30, 130,767.15 and 81,402.80

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Solution

The fourth proportional to 87,113.30, 130,767.15 and 81,402.80 is: 122,195.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,113.30 : 130,767.15 = 81,402.80 : x
  2. Step 2: Convert to fraction form
    87,113.30/130,767.15 = 81,402.80/x
  3. Step 3: Cross multiply
    87,113.30x = 130,767.15 × 81,402.80
  4. Step 4: Simplify right side
    87,113.30x = 10,644,812,158.02
  5. Step 5: Solve for x
    x = 10,644,812,158.02/87,113.30
  6. Step 6: Final answer
    x = 122,195.03

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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.