Home / 87,333.90-131,000.85-80,918.70

Finding the Fourth Proportional to 87,333.90, 131,000.85 and 80,918.70

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Solution

The fourth proportional to 87,333.90, 131,000.85 and 80,918.70 is: 121,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,333.90 : 131,000.85 = 80,918.70 : x
  2. Step 2: Convert to fraction form
    87,333.90/131,000.85 = 80,918.70/x
  3. Step 3: Cross multiply
    87,333.90x = 131,000.85 × 80,918.70
  4. Step 4: Simplify right side
    87,333.90x = 10,600,418,480.90
  5. Step 5: Solve for x
    x = 10,600,418,480.90/87,333.90
  6. Step 6: Final answer
    x = 121,378.05

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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.