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Finding the Fourth Proportional to 199,660.56, 299,625.30 and 81,353.18

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Solution

The fourth proportional to 199,660.56, 299,625.30 and 81,353.18 is: 122,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,660.56 : 299,625.30 = 81,353.18 : x
  2. Step 2: Convert to fraction form
    199,660.56/299,625.30 = 81,353.18/x
  3. Step 3: Cross multiply
    199,660.56x = 299,625.30 × 81,353.18
  4. Step 4: Simplify right side
    199,660.56x = 24,375,469,465.33
  5. Step 5: Solve for x
    x = 24,375,469,465.33/199,660.56
  6. Step 6: Final answer
    x = 122,084.55

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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.