Home / 80,189.78-120,255.51-27,585.14

Finding the Fourth Proportional to 80,189.78, 120,255.51 and 27,585.14

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Solution

The fourth proportional to 80,189.78, 120,255.51 and 27,585.14 is: 41,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,189.78 : 120,255.51 = 27,585.14 : x
  2. Step 2: Convert to fraction form
    80,189.78/120,255.51 = 27,585.14/x
  3. Step 3: Cross multiply
    80,189.78x = 120,255.51 × 27,585.14
  4. Step 4: Simplify right side
    80,189.78x = 3,317,265,079.12
  5. Step 5: Solve for x
    x = 3,317,265,079.12/80,189.78
  6. Step 6: Final answer
    x = 41,367.68

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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.