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Finding the Fourth Proportional to 168,757.20, 253,135.80 and 153,982.80

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Solution

The fourth proportional to 168,757.20, 253,135.80 and 153,982.80 is: 230,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,757.20 : 253,135.80 = 153,982.80 : x
  2. Step 2: Convert to fraction form
    168,757.20/253,135.80 = 153,982.80/x
  3. Step 3: Cross multiply
    168,757.20x = 253,135.80 × 153,982.80
  4. Step 4: Simplify right side
    168,757.20x = 38,978,559,264.24
  5. Step 5: Solve for x
    x = 38,978,559,264.24/168,757.20
  6. Step 6: Final answer
    x = 230,974.20

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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.