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Finding the Fourth Proportional to 198,156.54, 297,289.89 and 79,800.15

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Solution

The fourth proportional to 198,156.54, 297,289.89 and 79,800.15 is: 119,722.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,156.54 : 297,289.89 = 79,800.15 : x
  2. Step 2: Convert to fraction form
    198,156.54/297,289.89 = 79,800.15/x
  3. Step 3: Cross multiply
    198,156.54x = 297,289.89 × 79,800.15
  4. Step 4: Simplify right side
    198,156.54x = 23,723,777,815.48
  5. Step 5: Solve for x
    x = 23,723,777,815.48/198,156.54
  6. Step 6: Final answer
    x = 119,722.41

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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.