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Finding the Fourth Proportional to 119,197.60, 178,952.66 and 79,930.42

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Solution

The fourth proportional to 119,197.60, 178,952.66 and 79,930.42 is: 120,000.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,197.60 : 178,952.66 = 79,930.42 : x
  2. Step 2: Convert to fraction form
    119,197.60/178,952.66 = 79,930.42/x
  3. Step 3: Cross multiply
    119,197.60x = 178,952.66 × 79,930.42
  4. Step 4: Simplify right side
    119,197.60x = 14,303,761,273.92
  5. Step 5: Solve for x
    x = 14,303,761,273.92/119,197.60
  6. Step 6: Final answer
    x = 120,000.41

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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.