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Finding the Third Proportional to 72,936 and 104,292

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Solution

The third proportional to 72,936 and 104,292 is: 149,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,936 : 104,292 = 104,292 : x
  2. Step 2: Convert to fraction form
    72,936/104,292 = 104,292/x
  3. Step 3: Cross multiply
    72,936x = 104,292 × 104,292
  4. Step 4: Simplify right side
    72,936x = 10,876,821,264
  5. Step 5: Solve for x
    x = 10,876,821,264/72,936
  6. Step 6: Final answer
    x = 149,128.29

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.