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Finding the Third Proportional to 83,718 and 122,478.75

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Solution

The third proportional to 83,718 and 122,478.75 is: 179,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,718 : 122,478.75 = 122,478.75 : x
  2. Step 2: Convert to fraction form
    83,718/122,478.75 = 122,478.75/x
  3. Step 3: Cross multiply
    83,718x = 122,478.75 × 122,478.75
  4. Step 4: Simplify right side
    83,718x = 15,001,044,201.56
  5. Step 5: Solve for x
    x = 15,001,044,201.56/83,718
  6. Step 6: Final answer
    x = 179,185.41

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.