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Finding the Fourth Proportional to 169,249.11, 253,867.49 and 68,078.49

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Solution

The fourth proportional to 169,249.11, 253,867.49 and 68,078.49 is: 102,115.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,249.11 : 253,867.49 = 68,078.49 : x
  2. Step 2: Convert to fraction form
    169,249.11/253,867.49 = 68,078.49/x
  3. Step 3: Cross multiply
    169,249.11x = 253,867.49 × 68,078.49
  4. Step 4: Simplify right side
    169,249.11x = 17,282,914,109.95
  5. Step 5: Solve for x
    x = 17,282,914,109.95/169,249.11
  6. Step 6: Final answer
    x = 102,115.25

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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.