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Finding the Fourth Proportional to 80,139.52, 120,203.52 and 35,770.24

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Solution

The fourth proportional to 80,139.52, 120,203.52 and 35,770.24 is: 53,652.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,139.52 : 120,203.52 = 35,770.24 : x
  2. Step 2: Convert to fraction form
    80,139.52/120,203.52 = 35,770.24/x
  3. Step 3: Cross multiply
    80,139.52x = 120,203.52 × 35,770.24
  4. Step 4: Simplify right side
    80,139.52x = 4,299,708,759.24
  5. Step 5: Solve for x
    x = 4,299,708,759.24/80,139.52
  6. Step 6: Final answer
    x = 53,652.79

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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.