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Finding the Fourth Proportional to 168,488.88, 252,608.46 and 79,638.57

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Solution

The fourth proportional to 168,488.88, 252,608.46 and 79,638.57 is: 119,398.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,488.88 : 252,608.46 = 79,638.57 : x
  2. Step 2: Convert to fraction form
    168,488.88/252,608.46 = 79,638.57/x
  3. Step 3: Cross multiply
    168,488.88x = 252,608.46 × 79,638.57
  4. Step 4: Simplify right side
    168,488.88x = 20,117,376,524.30
  5. Step 5: Solve for x
    x = 20,117,376,524.30/168,488.88
  6. Step 6: Final answer
    x = 119,398.84

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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.