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Finding the Fourth Proportional to 168,874.32, 253,091.64 and 68,917.20

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Solution

The fourth proportional to 168,874.32, 253,091.64 and 68,917.20 is: 103,286.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,874.32 : 253,091.64 = 68,917.20 : x
  2. Step 2: Convert to fraction form
    168,874.32/253,091.64 = 68,917.20/x
  3. Step 3: Cross multiply
    168,874.32x = 253,091.64 × 68,917.20
  4. Step 4: Simplify right side
    168,874.32x = 17,442,367,172.21
  5. Step 5: Solve for x
    x = 17,442,367,172.21/168,874.32
  6. Step 6: Final answer
    x = 103,286.08

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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.