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Finding the Fourth Proportional to 168,759.20, 253,138.80 and 89,832.80

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Solution

The fourth proportional to 168,759.20, 253,138.80 and 89,832.80 is: 134,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,759.20 : 253,138.80 = 89,832.80 : x
  2. Step 2: Convert to fraction form
    168,759.20/253,138.80 = 89,832.80/x
  3. Step 3: Cross multiply
    168,759.20x = 253,138.80 × 89,832.80
  4. Step 4: Simplify right side
    168,759.20x = 22,740,167,192.64
  5. Step 5: Solve for x
    x = 22,740,167,192.64/168,759.20
  6. Step 6: Final answer
    x = 134,749.20

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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.