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Finding the Fourth Proportional to 168,330.20, 251,839.20 and 109,281.20

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Solution

The fourth proportional to 168,330.20, 251,839.20 and 109,281.20 is: 163,495.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,330.20 : 251,839.20 = 109,281.20 : x
  2. Step 2: Convert to fraction form
    168,330.20/251,839.20 = 109,281.20/x
  3. Step 3: Cross multiply
    168,330.20x = 251,839.20 × 109,281.20
  4. Step 4: Simplify right side
    168,330.20x = 27,521,289,983.04
  5. Step 5: Solve for x
    x = 27,521,289,983.04/168,330.20
  6. Step 6: Final answer
    x = 163,495.86

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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.