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Finding the Fourth Proportional to 178,961.60, 268,150.80 and 131,722.40

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Solution

The fourth proportional to 178,961.60, 268,150.80 and 131,722.40 is: 197,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,961.60 : 268,150.80 = 131,722.40 : x
  2. Step 2: Convert to fraction form
    178,961.60/268,150.80 = 131,722.40/x
  3. Step 3: Cross multiply
    178,961.60x = 268,150.80 × 131,722.40
  4. Step 4: Simplify right side
    178,961.60x = 35,321,466,937.92
  5. Step 5: Solve for x
    x = 35,321,466,937.92/178,961.60
  6. Step 6: Final answer
    x = 197,368.97

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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.