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Finding the Fourth Proportional to 168,494.90, 252,617.45 and 79,644.56

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Solution

The fourth proportional to 168,494.90, 252,617.45 and 79,644.56 is: 119,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,494.90 : 252,617.45 = 79,644.56 : x
  2. Step 2: Convert to fraction form
    168,494.90/252,617.45 = 79,644.56/x
  3. Step 3: Cross multiply
    168,494.90x = 252,617.45 × 79,644.56
  4. Step 4: Simplify right side
    168,494.90x = 20,119,603,992.26
  5. Step 5: Solve for x
    x = 20,119,603,992.26/168,494.90
  6. Step 6: Final answer
    x = 119,407.80

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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.