Home / 129,740.52-194,833.12-80,114.24

Finding the Fourth Proportional to 129,740.52, 194,833.12 and 80,114.24

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Solution

The fourth proportional to 129,740.52, 194,833.12 and 80,114.24 is: 120,308.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740.52 : 194,833.12 = 80,114.24 : x
  2. Step 2: Convert to fraction form
    129,740.52/194,833.12 = 80,114.24/x
  3. Step 3: Cross multiply
    129,740.52x = 194,833.12 × 80,114.24
  4. Step 4: Simplify right side
    129,740.52x = 15,608,907,335.63
  5. Step 5: Solve for x
    x = 15,608,907,335.63/129,740.52
  6. Step 6: Final answer
    x = 120,308.65

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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.