Home / 87,000.10-130,694.55-83,695.30

Finding the Fourth Proportional to 87,000.10, 130,694.55 and 83,695.30

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Solution

The fourth proportional to 87,000.10, 130,694.55 and 83,695.30 is: 125,729.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,000.10 : 130,694.55 = 83,695.30 : x
  2. Step 2: Convert to fraction form
    87,000.10/130,694.55 = 83,695.30/x
  3. Step 3: Cross multiply
    87,000.10x = 130,694.55 × 83,695.30
  4. Step 4: Simplify right side
    87,000.10x = 10,938,519,570.62
  5. Step 5: Solve for x
    x = 10,938,519,570.62/87,000.10
  6. Step 6: Final answer
    x = 125,729.97

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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.