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Finding the Fourth Proportional to 168,396, 252,701.55 and 79,654.74

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Solution

The fourth proportional to 168,396, 252,701.55 and 79,654.74 is: 119,532.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,396 : 252,701.55 = 79,654.74 : x
  2. Step 2: Convert to fraction form
    168,396/252,701.55 = 79,654.74/x
  3. Step 3: Cross multiply
    168,396x = 252,701.55 × 79,654.74
  4. Step 4: Simplify right side
    168,396x = 20,128,876,262.85
  5. Step 5: Solve for x
    x = 20,128,876,262.85/168,396
  6. Step 6: Final answer
    x = 119,532.98

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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.