Home / 129,645.20-194,443.80-36,131.60

Finding the Fourth Proportional to 129,645.20, 194,443.80 and 36,131.60

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Solution

The fourth proportional to 129,645.20, 194,443.80 and 36,131.60 is: 54,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,645.20 : 194,443.80 = 36,131.60 : x
  2. Step 2: Convert to fraction form
    129,645.20/194,443.80 = 36,131.60/x
  3. Step 3: Cross multiply
    129,645.20x = 194,443.80 × 36,131.60
  4. Step 4: Simplify right side
    129,645.20x = 7,025,565,604.08
  5. Step 5: Solve for x
    x = 7,025,565,604.08/129,645.20
  6. Step 6: Final answer
    x = 54,190.71

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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.