Home / 87,145.30-130,523.55-67,359.70

Finding the Fourth Proportional to 87,145.30, 130,523.55 and 67,359.70

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Solution

The fourth proportional to 87,145.30, 130,523.55 and 67,359.70 is: 100,889.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,145.30 : 130,523.55 = 67,359.70 : x
  2. Step 2: Convert to fraction form
    87,145.30/130,523.55 = 67,359.70/x
  3. Step 3: Cross multiply
    87,145.30x = 130,523.55 × 67,359.70
  4. Step 4: Simplify right side
    87,145.30x = 8,792,027,170.94
  5. Step 5: Solve for x
    x = 8,792,027,170.94/87,145.30
  6. Step 6: Final answer
    x = 100,889.29

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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.