Home / 87,519.80-131,279.70-83,680.40

Finding the Fourth Proportional to 87,519.80, 131,279.70 and 83,680.40

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Solution

The fourth proportional to 87,519.80, 131,279.70 and 83,680.40 is: 125,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,519.80 : 131,279.70 = 83,680.40 : x
  2. Step 2: Convert to fraction form
    87,519.80/131,279.70 = 83,680.40/x
  3. Step 3: Cross multiply
    87,519.80x = 131,279.70 × 83,680.40
  4. Step 4: Simplify right side
    87,519.80x = 10,985,537,807.88
  5. Step 5: Solve for x
    x = 10,985,537,807.88/87,519.80
  6. Step 6: Final answer
    x = 125,520.60

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1.5x scale

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.