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Finding the Third Proportional to 99,310.50 and 127,512

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Solution

The third proportional to 99,310.50 and 127,512 is: 163,721.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,310.50 : 127,512 = 127,512 : x
  2. Step 2: Convert to fraction form
    99,310.50/127,512 = 127,512/x
  3. Step 3: Cross multiply
    99,310.50x = 127,512 × 127,512
  4. Step 4: Simplify right side
    99,310.50x = 16,259,310,144
  5. Step 5: Solve for x
    x = 16,259,310,144/99,310.50
  6. Step 6: Final answer
    x = 163,721.96

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.