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Finding the Fourth Proportional to 168,328.20, 251,836.20 and 109,279.20

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Solution

The fourth proportional to 168,328.20, 251,836.20 and 109,279.20 is: 163,492.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,328.20 : 251,836.20 = 109,279.20 : x
  2. Step 2: Convert to fraction form
    168,328.20/251,836.20 = 109,279.20/x
  3. Step 3: Cross multiply
    168,328.20x = 251,836.20 × 109,279.20
  4. Step 4: Simplify right side
    168,328.20x = 27,520,458,467.04
  5. Step 5: Solve for x
    x = 27,520,458,467.04/168,328.20
  6. Step 6: Final answer
    x = 163,492.86

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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.