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Finding the Third Proportional to 66,326 and 143,156

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Solution

The third proportional to 66,326 and 143,156 is: 308,983.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,326 : 143,156 = 143,156 : x
  2. Step 2: Convert to fraction form
    66,326/143,156 = 143,156/x
  3. Step 3: Cross multiply
    66,326x = 143,156 × 143,156
  4. Step 4: Simplify right side
    66,326x = 20,493,640,336
  5. Step 5: Solve for x
    x = 20,493,640,336/66,326
  6. Step 6: Final answer
    x = 308,983.51

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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.