Home / 129,379.28-194,007.48-45,129.22

Finding the Fourth Proportional to 129,379.28, 194,007.48 and 45,129.22

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Solution

The fourth proportional to 129,379.28, 194,007.48 and 45,129.22 is: 67,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,379.28 : 194,007.48 = 45,129.22 : x
  2. Step 2: Convert to fraction form
    129,379.28/194,007.48 = 45,129.22/x
  3. Step 3: Cross multiply
    129,379.28x = 194,007.48 × 45,129.22
  4. Step 4: Simplify right side
    129,379.28x = 8,755,406,246.57
  5. Step 5: Solve for x
    x = 8,755,406,246.57/129,379.28
  6. Step 6: Final answer
    x = 67,672.40

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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.