Home / 129,330.78-193,996.20-40,591.20

Finding the Fourth Proportional to 129,330.78, 193,996.20 and 40,591.20

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Solution

The fourth proportional to 129,330.78, 193,996.20 and 40,591.20 is: 60,886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,330.78 : 193,996.20 = 40,591.20 : x
  2. Step 2: Convert to fraction form
    129,330.78/193,996.20 = 40,591.20/x
  3. Step 3: Cross multiply
    129,330.78x = 193,996.20 × 40,591.20
  4. Step 4: Simplify right side
    129,330.78x = 7,874,538,553.44
  5. Step 5: Solve for x
    x = 7,874,538,553.44/129,330.78
  6. Step 6: Final answer
    x = 60,886.81

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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.