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Finding the Third Proportional to 79,884 and 122,940

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Solution

The third proportional to 79,884 and 122,940 is: 189,202.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,884 : 122,940 = 122,940 : x
  2. Step 2: Convert to fraction form
    79,884/122,940 = 122,940/x
  3. Step 3: Cross multiply
    79,884x = 122,940 × 122,940
  4. Step 4: Simplify right side
    79,884x = 15,114,243,600
  5. Step 5: Solve for x
    x = 15,114,243,600/79,884
  6. Step 6: Final answer
    x = 189,202.39

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.