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Finding the Third Proportional to 66,992 and 106,638

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Solution

The third proportional to 66,992 and 106,638 is: 169,746.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,992 : 106,638 = 106,638 : x
  2. Step 2: Convert to fraction form
    66,992/106,638 = 106,638/x
  3. Step 3: Cross multiply
    66,992x = 106,638 × 106,638
  4. Step 4: Simplify right side
    66,992x = 11,371,663,044
  5. Step 5: Solve for x
    x = 11,371,663,044/66,992
  6. Step 6: Final answer
    x = 169,746.58

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.