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Finding the Fourth Proportional to 198,118.54, 297,187.53 and 79,773.90

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Solution

The fourth proportional to 198,118.54, 297,187.53 and 79,773.90 is: 119,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,118.54 : 297,187.53 = 79,773.90 : x
  2. Step 2: Convert to fraction form
    198,118.54/297,187.53 = 79,773.90/x
  3. Step 3: Cross multiply
    198,118.54x = 297,187.53 × 79,773.90
  4. Step 4: Simplify right side
    198,118.54x = 23,707,808,299.47
  5. Step 5: Solve for x
    x = 23,707,808,299.47/198,118.54
  6. Step 6: Final answer
    x = 119,664.76

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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.