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Finding the Third Proportional to 78,344 and 108,228

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Solution

The third proportional to 78,344 and 108,228 is: 149,511.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,344 : 108,228 = 108,228 : x
  2. Step 2: Convert to fraction form
    78,344/108,228 = 108,228/x
  3. Step 3: Cross multiply
    78,344x = 108,228 × 108,228
  4. Step 4: Simplify right side
    78,344x = 11,713,299,984
  5. Step 5: Solve for x
    x = 11,713,299,984/78,344
  6. Step 6: Final answer
    x = 149,511.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.