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Finding the Third Proportional to 103,613 and 122,750

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Solution

The third proportional to 103,613 and 122,750 is: 145,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613 : 122,750 = 122,750 : x
  2. Step 2: Convert to fraction form
    103,613/122,750 = 122,750/x
  3. Step 3: Cross multiply
    103,613x = 122,750 × 122,750
  4. Step 4: Simplify right side
    103,613x = 15,067,562,500
  5. Step 5: Solve for x
    x = 15,067,562,500/103,613
  6. Step 6: Final answer
    x = 145,421.54

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.