Home / 154,747.52-231,810.24-80,720

Finding the Fourth Proportional to 154,747.52, 231,810.24 and 80,720

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Solution

The fourth proportional to 154,747.52, 231,810.24 and 80,720 is: 120,917.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,747.52 : 231,810.24 = 80,720 : x
  2. Step 2: Convert to fraction form
    154,747.52/231,810.24 = 80,720/x
  3. Step 3: Cross multiply
    154,747.52x = 231,810.24 × 80,720
  4. Step 4: Simplify right side
    154,747.52x = 18,711,722,572.80
  5. Step 5: Solve for x
    x = 18,711,722,572.80/154,747.52
  6. Step 6: Final answer
    x = 120,917.75

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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.