Home / 87,465.80-131,004.30-67,680.20

Finding the Fourth Proportional to 87,465.80, 131,004.30 and 67,680.20

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Solution

The fourth proportional to 87,465.80, 131,004.30 and 67,680.20 is: 101,369.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,465.80 : 131,004.30 = 67,680.20 : x
  2. Step 2: Convert to fraction form
    87,465.80/131,004.30 = 67,680.20/x
  3. Step 3: Cross multiply
    87,465.80x = 131,004.30 × 67,680.20
  4. Step 4: Simplify right side
    87,465.80x = 8,866,397,224.86
  5. Step 5: Solve for x
    x = 8,866,397,224.86/87,465.80
  6. Step 6: Final answer
    x = 101,369.88

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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.