Home / 129,640.20-194,470.29-49,716.45

Finding the Fourth Proportional to 129,640.20, 194,470.29 and 49,716.45

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Solution

The fourth proportional to 129,640.20, 194,470.29 and 49,716.45 is: 74,578.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,640.20 : 194,470.29 = 49,716.45 : x
  2. Step 2: Convert to fraction form
    129,640.20/194,470.29 = 49,716.45/x
  3. Step 3: Cross multiply
    129,640.20x = 194,470.29 × 49,716.45
  4. Step 4: Simplify right side
    129,640.20x = 9,668,372,449.27
  5. Step 5: Solve for x
    x = 9,668,372,449.27/129,640.20
  6. Step 6: Final answer
    x = 74,578.51

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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.