Home / 129,742.40-194,306.40-87,963.20

Finding the Fourth Proportional to 129,742.40, 194,306.40 and 87,963.20

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Solution

The fourth proportional to 129,742.40, 194,306.40 and 87,963.20 is: 131,736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,742.40 : 194,306.40 = 87,963.20 : x
  2. Step 2: Convert to fraction form
    129,742.40/194,306.40 = 87,963.20/x
  3. Step 3: Cross multiply
    129,742.40x = 194,306.40 × 87,963.20
  4. Step 4: Simplify right side
    129,742.40x = 17,091,812,724.48
  5. Step 5: Solve for x
    x = 17,091,812,724.48/129,742.40
  6. Step 6: Final answer
    x = 131,736.52

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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.