Home / 129,836.40-194,754.60-121,963.20

Finding the Fourth Proportional to 129,836.40, 194,754.60 and 121,963.20

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Solution

The fourth proportional to 129,836.40, 194,754.60 and 121,963.20 is: 182,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,836.40 : 194,754.60 = 121,963.20 : x
  2. Step 2: Convert to fraction form
    129,836.40/194,754.60 = 121,963.20/x
  3. Step 3: Cross multiply
    129,836.40x = 194,754.60 × 121,963.20
  4. Step 4: Simplify right side
    129,836.40x = 23,752,894,230.72
  5. Step 5: Solve for x
    x = 23,752,894,230.72/129,836.40
  6. Step 6: Final answer
    x = 182,944.80

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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.