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Finding the Third Proportional to 76,107 and 121,208

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Solution

The third proportional to 76,107 and 121,208 is: 193,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,107 : 121,208 = 121,208 : x
  2. Step 2: Convert to fraction form
    76,107/121,208 = 121,208/x
  3. Step 3: Cross multiply
    76,107x = 121,208 × 121,208
  4. Step 4: Simplify right side
    76,107x = 14,691,379,264
  5. Step 5: Solve for x
    x = 14,691,379,264/76,107
  6. Step 6: Final answer
    x = 193,035.85

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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.