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Finding the Third Proportional to 103,789 and 156,638

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Solution

The third proportional to 103,789 and 156,638 is: 236,397.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,789 : 156,638 = 156,638 : x
  2. Step 2: Convert to fraction form
    103,789/156,638 = 156,638/x
  3. Step 3: Cross multiply
    103,789x = 156,638 × 156,638
  4. Step 4: Simplify right side
    103,789x = 24,535,463,044
  5. Step 5: Solve for x
    x = 24,535,463,044/103,789
  6. Step 6: Final answer
    x = 236,397.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.