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Finding the Third Proportional to 66,423 and 143,922

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Solution

The third proportional to 66,423 and 143,922 is: 311,842.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,423 : 143,922 = 143,922 : x
  2. Step 2: Convert to fraction form
    66,423/143,922 = 143,922/x
  3. Step 3: Cross multiply
    66,423x = 143,922 × 143,922
  4. Step 4: Simplify right side
    66,423x = 20,713,542,084
  5. Step 5: Solve for x
    x = 20,713,542,084/66,423
  6. Step 6: Final answer
    x = 311,842.92

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.