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Finding the Fourth Proportional to 168,609.90, 252,878.40 and 73,839.90

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Solution

The fourth proportional to 168,609.90, 252,878.40 and 73,839.90 is: 110,743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,609.90 : 252,878.40 = 73,839.90 : x
  2. Step 2: Convert to fraction form
    168,609.90/252,878.40 = 73,839.90/x
  3. Step 3: Cross multiply
    168,609.90x = 252,878.40 × 73,839.90
  4. Step 4: Simplify right side
    168,609.90x = 18,672,515,768.16
  5. Step 5: Solve for x
    x = 18,672,515,768.16/168,609.90
  6. Step 6: Final answer
    x = 110,743.89

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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.