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Finding the Fourth Proportional to 198,163.54, 297,255.06 and 79,818.88

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Solution

The fourth proportional to 198,163.54, 297,255.06 and 79,818.88 is: 119,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,163.54 : 297,255.06 = 79,818.88 : x
  2. Step 2: Convert to fraction form
    198,163.54/297,255.06 = 79,818.88/x
  3. Step 3: Cross multiply
    198,163.54x = 297,255.06 × 79,818.88
  4. Step 4: Simplify right side
    198,163.54x = 23,726,565,963.53
  5. Step 5: Solve for x
    x = 23,726,565,963.53/198,163.54
  6. Step 6: Final answer
    x = 119,732.25

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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.