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Finding the Third Proportional to 83,640 and 183,912

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Solution

The third proportional to 83,640 and 183,912 is: 404,395.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640 : 183,912 = 183,912 : x
  2. Step 2: Convert to fraction form
    83,640/183,912 = 183,912/x
  3. Step 3: Cross multiply
    83,640x = 183,912 × 183,912
  4. Step 4: Simplify right side
    83,640x = 33,823,623,744
  5. Step 5: Solve for x
    x = 33,823,623,744/83,640
  6. Step 6: Final answer
    x = 404,395.31

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.