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Finding the Third Proportional to 68,699.25 and 109,282.50

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Solution

The third proportional to 68,699.25 and 109,282.50 is: 173,839.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,699.25 : 109,282.50 = 109,282.50 : x
  2. Step 2: Convert to fraction form
    68,699.25/109,282.50 = 109,282.50/x
  3. Step 3: Cross multiply
    68,699.25x = 109,282.50 × 109,282.50
  4. Step 4: Simplify right side
    68,699.25x = 11,942,664,806.25
  5. Step 5: Solve for x
    x = 11,942,664,806.25/68,699.25
  6. Step 6: Final answer
    x = 173,839.81

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.