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Finding the Fourth Proportional to 178,879.20, 268,351.20 and 89,908.80

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Solution

The fourth proportional to 178,879.20, 268,351.20 and 89,908.80 is: 134,879.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,879.20 : 268,351.20 = 89,908.80 : x
  2. Step 2: Convert to fraction form
    178,879.20/268,351.20 = 89,908.80/x
  3. Step 3: Cross multiply
    178,879.20x = 268,351.20 × 89,908.80
  4. Step 4: Simplify right side
    178,879.20x = 24,127,134,370.56
  5. Step 5: Solve for x
    x = 24,127,134,370.56/178,879.20
  6. Step 6: Final answer
    x = 134,879.48

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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.