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Finding the Fourth Proportional to 168,763.20, 253,144.80 and 89,836.80

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Solution

The fourth proportional to 168,763.20, 253,144.80 and 89,836.80 is: 134,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,763.20 : 253,144.80 = 89,836.80 : x
  2. Step 2: Convert to fraction form
    168,763.20/253,144.80 = 89,836.80/x
  3. Step 3: Cross multiply
    168,763.20x = 253,144.80 × 89,836.80
  4. Step 4: Simplify right side
    168,763.20x = 22,741,718,768.64
  5. Step 5: Solve for x
    x = 22,741,718,768.64/168,763.20
  6. Step 6: Final answer
    x = 134,755.20

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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.