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Finding the Third Proportional to 66,381.75 and 143,364.38

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Solution

The third proportional to 66,381.75 and 143,364.38 is: 309,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,381.75 : 143,364.38 = 143,364.38 : x
  2. Step 2: Convert to fraction form
    66,381.75/143,364.38 = 143,364.38/x
  3. Step 3: Cross multiply
    66,381.75x = 143,364.38 × 143,364.38
  4. Step 4: Simplify right side
    66,381.75x = 20,553,344,019.14
  5. Step 5: Solve for x
    x = 20,553,344,019.14/66,381.75
  6. Step 6: Final answer
    x = 309,623.41

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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.