Home / 80,135.20-120,213.60-27,560.80

Finding the Fourth Proportional to 80,135.20, 120,213.60 and 27,560.80

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Solution

The fourth proportional to 80,135.20, 120,213.60 and 27,560.80 is: 41,344.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,135.20 : 120,213.60 = 27,560.80 : x
  2. Step 2: Convert to fraction form
    80,135.20/120,213.60 = 27,560.80/x
  3. Step 3: Cross multiply
    80,135.20x = 120,213.60 × 27,560.80
  4. Step 4: Simplify right side
    80,135.20x = 3,313,182,986.88
  5. Step 5: Solve for x
    x = 3,313,182,986.88/80,135.20
  6. Step 6: Final answer
    x = 41,344.91

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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.