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Finding the Third Proportional to 68,721.75 and 105,126.75

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Solution

The third proportional to 68,721.75 and 105,126.75 is: 160,817.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,721.75 : 105,126.75 = 105,126.75 : x
  2. Step 2: Convert to fraction form
    68,721.75/105,126.75 = 105,126.75/x
  3. Step 3: Cross multiply
    68,721.75x = 105,126.75 × 105,126.75
  4. Step 4: Simplify right side
    68,721.75x = 11,051,633,565.56
  5. Step 5: Solve for x
    x = 11,051,633,565.56/68,721.75
  6. Step 6: Final answer
    x = 160,817.11

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.