Home / 80,131.20-120,207.60-27,556.80

Finding the Fourth Proportional to 80,131.20, 120,207.60 and 27,556.80

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Solution

The fourth proportional to 80,131.20, 120,207.60 and 27,556.80 is: 41,338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,131.20 : 120,207.60 = 27,556.80 : x
  2. Step 2: Convert to fraction form
    80,131.20/120,207.60 = 27,556.80/x
  3. Step 3: Cross multiply
    80,131.20x = 120,207.60 × 27,556.80
  4. Step 4: Simplify right side
    80,131.20x = 3,312,536,791.68
  5. Step 5: Solve for x
    x = 3,312,536,791.68/80,131.20
  6. Step 6: Final answer
    x = 41,338.91

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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.