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Finding the Third Proportional to 99,072 and 207,936

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Solution

The third proportional to 99,072 and 207,936 is: 436,423.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,072 : 207,936 = 207,936 : x
  2. Step 2: Convert to fraction form
    99,072/207,936 = 207,936/x
  3. Step 3: Cross multiply
    99,072x = 207,936 × 207,936
  4. Step 4: Simplify right side
    99,072x = 43,237,380,096
  5. Step 5: Solve for x
    x = 43,237,380,096/99,072
  6. Step 6: Final answer
    x = 436,423.81

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.