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Finding the Third Proportional to 68,684 and 103,988

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Solution

The third proportional to 68,684 and 103,988 is: 157,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,684 : 103,988 = 103,988 : x
  2. Step 2: Convert to fraction form
    68,684/103,988 = 103,988/x
  3. Step 3: Cross multiply
    68,684x = 103,988 × 103,988
  4. Step 4: Simplify right side
    68,684x = 10,813,504,144
  5. Step 5: Solve for x
    x = 10,813,504,144/68,684
  6. Step 6: Final answer
    x = 157,438.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.