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Finding the Third Proportional to 79,161 and 122,508

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Solution

The third proportional to 79,161 and 122,508 is: 189,590.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,161 : 122,508 = 122,508 : x
  2. Step 2: Convert to fraction form
    79,161/122,508 = 122,508/x
  3. Step 3: Cross multiply
    79,161x = 122,508 × 122,508
  4. Step 4: Simplify right side
    79,161x = 15,008,210,064
  5. Step 5: Solve for x
    x = 15,008,210,064/79,161
  6. Step 6: Final answer
    x = 189,590.96

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.