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Finding the Third Proportional to 106,392 and 138,042

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Solution

The third proportional to 106,392 and 138,042 is: 179,107.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,392 : 138,042 = 138,042 : x
  2. Step 2: Convert to fraction form
    106,392/138,042 = 138,042/x
  3. Step 3: Cross multiply
    106,392x = 138,042 × 138,042
  4. Step 4: Simplify right side
    106,392x = 19,055,593,764
  5. Step 5: Solve for x
    x = 19,055,593,764/106,392
  6. Step 6: Final answer
    x = 179,107.39

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.