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Finding the Third Proportional to 69,208 and 108,423

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Solution

The third proportional to 69,208 and 108,423 is: 169,858.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,208 : 108,423 = 108,423 : x
  2. Step 2: Convert to fraction form
    69,208/108,423 = 108,423/x
  3. Step 3: Cross multiply
    69,208x = 108,423 × 108,423
  4. Step 4: Simplify right side
    69,208x = 11,755,546,929
  5. Step 5: Solve for x
    x = 11,755,546,929/69,208
  6. Step 6: Final answer
    x = 169,858.21

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.