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Finding the Fourth Proportional to 179,379.60, 268,972.20 and 74,209.20

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Solution

The fourth proportional to 179,379.60, 268,972.20 and 74,209.20 is: 111,273.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,379.60 : 268,972.20 = 74,209.20 : x
  2. Step 2: Convert to fraction form
    179,379.60/268,972.20 = 74,209.20/x
  3. Step 3: Cross multiply
    179,379.60x = 268,972.20 × 74,209.20
  4. Step 4: Simplify right side
    179,379.60x = 19,960,211,784.24
  5. Step 5: Solve for x
    x = 19,960,211,784.24/179,379.60
  6. Step 6: Final answer
    x = 111,273.59

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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.