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Finding the Fourth Proportional to 168,129.60, 251,902.80 and 108,934.80

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Solution

The fourth proportional to 168,129.60, 251,902.80 and 108,934.80 is: 163,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,129.60 : 251,902.80 = 108,934.80 : x
  2. Step 2: Convert to fraction form
    168,129.60/251,902.80 = 108,934.80/x
  3. Step 3: Cross multiply
    168,129.60x = 251,902.80 × 108,934.80
  4. Step 4: Simplify right side
    168,129.60x = 27,440,981,137.44
  5. Step 5: Solve for x
    x = 27,440,981,137.44/168,129.60
  6. Step 6: Final answer
    x = 163,213.27

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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.