Home / 129,540.61-194,317.88-40,801.06

Finding the Fourth Proportional to 129,540.61, 194,317.88 and 40,801.06

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Solution

The fourth proportional to 129,540.61, 194,317.88 and 40,801.06 is: 61,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,540.61 : 194,317.88 = 40,801.06 : x
  2. Step 2: Convert to fraction form
    129,540.61/194,317.88 = 40,801.06/x
  3. Step 3: Cross multiply
    129,540.61x = 194,317.88 × 40,801.06
  4. Step 4: Simplify right side
    129,540.61x = 7,928,375,480.95
  5. Step 5: Solve for x
    x = 7,928,375,480.95/129,540.61
  6. Step 6: Final answer
    x = 61,203.78

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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.