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Finding the Fourth Proportional to 198,162.54, 297,253.56 and 79,817.88

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Solution

The fourth proportional to 198,162.54, 297,253.56 and 79,817.88 is: 119,730.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,162.54 : 297,253.56 = 79,817.88 : x
  2. Step 2: Convert to fraction form
    198,162.54/297,253.56 = 79,817.88/x
  3. Step 3: Cross multiply
    198,162.54x = 297,253.56 × 79,817.88
  4. Step 4: Simplify right side
    198,162.54x = 23,726,148,981.65
  5. Step 5: Solve for x
    x = 23,726,148,981.65/198,162.54
  6. Step 6: Final answer
    x = 119,730.75

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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.