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Finding the Fourth Proportional to 119,171.70, 178,708.95 and 40,245.30

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Solution

The fourth proportional to 119,171.70, 178,708.95 and 40,245.30 is: 60,351.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,171.70 : 178,708.95 = 40,245.30 : x
  2. Step 2: Convert to fraction form
    119,171.70/178,708.95 = 40,245.30/x
  3. Step 3: Cross multiply
    119,171.70x = 178,708.95 × 40,245.30
  4. Step 4: Simplify right side
    119,171.70x = 7,192,195,305.44
  5. Step 5: Solve for x
    x = 7,192,195,305.44/119,171.70
  6. Step 6: Final answer
    x = 60,351.54

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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.