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Finding the Third Proportional to 68,538 and 105,480

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Solution

The third proportional to 68,538 and 105,480 is: 162,333.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,538 : 105,480 = 105,480 : x
  2. Step 2: Convert to fraction form
    68,538/105,480 = 105,480/x
  3. Step 3: Cross multiply
    68,538x = 105,480 × 105,480
  4. Step 4: Simplify right side
    68,538x = 11,126,030,400
  5. Step 5: Solve for x
    x = 11,126,030,400/68,538
  6. Step 6: Final answer
    x = 162,333.75

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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.