Home / 129,619.20-194,404.80-36,105.60

Finding the Fourth Proportional to 129,619.20, 194,404.80 and 36,105.60

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Solution

The fourth proportional to 129,619.20, 194,404.80 and 36,105.60 is: 54,151.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,619.20 : 194,404.80 = 36,105.60 : x
  2. Step 2: Convert to fraction form
    129,619.20/194,404.80 = 36,105.60/x
  3. Step 3: Cross multiply
    129,619.20x = 194,404.80 × 36,105.60
  4. Step 4: Simplify right side
    129,619.20x = 7,019,101,946.88
  5. Step 5: Solve for x
    x = 7,019,101,946.88/129,619.20
  6. Step 6: Final answer
    x = 54,151.71

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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.