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Finding the Third Proportional to 79,278.75 and 108,712.13

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Solution

The third proportional to 79,278.75 and 108,712.13 is: 149,073.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278.75 : 108,712.13 = 108,712.13 : x
  2. Step 2: Convert to fraction form
    79,278.75/108,712.13 = 108,712.13/x
  3. Step 3: Cross multiply
    79,278.75x = 108,712.13 × 108,712.13
  4. Step 4: Simplify right side
    79,278.75x = 11,818,326,122.02
  5. Step 5: Solve for x
    x = 11,818,326,122.02/79,278.75
  6. Step 6: Final answer
    x = 149,073.06

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.