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Finding the Third Proportional to 66,299.50 and 143,189.75

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Solution

The third proportional to 66,299.50 and 143,189.75 is: 309,252.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,299.50 : 143,189.75 = 143,189.75 : x
  2. Step 2: Convert to fraction form
    66,299.50/143,189.75 = 143,189.75/x
  3. Step 3: Cross multiply
    66,299.50x = 143,189.75 × 143,189.75
  4. Step 4: Simplify right side
    66,299.50x = 20,503,304,505.06
  5. Step 5: Solve for x
    x = 20,503,304,505.06/66,299.50
  6. Step 6: Final answer
    x = 309,252.78

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.