Home / 129,631.20-194,422.80-36,117.60

Finding the Fourth Proportional to 129,631.20, 194,422.80 and 36,117.60

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Solution

The fourth proportional to 129,631.20, 194,422.80 and 36,117.60 is: 54,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,631.20 : 194,422.80 = 36,117.60 : x
  2. Step 2: Convert to fraction form
    129,631.20/194,422.80 = 36,117.60/x
  3. Step 3: Cross multiply
    129,631.20x = 194,422.80 × 36,117.60
  4. Step 4: Simplify right side
    129,631.20x = 7,022,084,921.28
  5. Step 5: Solve for x
    x = 7,022,084,921.28/129,631.20
  6. Step 6: Final answer
    x = 54,169.71

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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.