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Finding the Third Proportional to 68,328 and 105,678

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Solution

The third proportional to 68,328 and 105,678 is: 163,444.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,328 : 105,678 = 105,678 : x
  2. Step 2: Convert to fraction form
    68,328/105,678 = 105,678/x
  3. Step 3: Cross multiply
    68,328x = 105,678 × 105,678
  4. Step 4: Simplify right side
    68,328x = 11,167,839,684
  5. Step 5: Solve for x
    x = 11,167,839,684/68,328
  6. Step 6: Final answer
    x = 163,444.56

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.