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Finding the Third Proportional to 66,869.25 and 99,198

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Solution

The third proportional to 66,869.25 and 99,198 is: 147,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869.25 : 99,198 = 99,198 : x
  2. Step 2: Convert to fraction form
    66,869.25/99,198 = 99,198/x
  3. Step 3: Cross multiply
    66,869.25x = 99,198 × 99,198
  4. Step 4: Simplify right side
    66,869.25x = 9,840,243,204
  5. Step 5: Solve for x
    x = 9,840,243,204/66,869.25
  6. Step 6: Final answer
    x = 147,156.48

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.