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Finding the Third Proportional to 69,638 and 106,089

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Solution

The third proportional to 69,638 and 106,089 is: 161,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,638 : 106,089 = 106,089 : x
  2. Step 2: Convert to fraction form
    69,638/106,089 = 106,089/x
  3. Step 3: Cross multiply
    69,638x = 106,089 × 106,089
  4. Step 4: Simplify right side
    69,638x = 11,254,875,921
  5. Step 5: Solve for x
    x = 11,254,875,921/69,638
  6. Step 6: Final answer
    x = 161,619.75

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.