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Finding the Third Proportional to 66,370 and 140,512

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Solution

The third proportional to 66,370 and 140,512 is: 297,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,370 : 140,512 = 140,512 : x
  2. Step 2: Convert to fraction form
    66,370/140,512 = 140,512/x
  3. Step 3: Cross multiply
    66,370x = 140,512 × 140,512
  4. Step 4: Simplify right side
    66,370x = 19,743,622,144
  5. Step 5: Solve for x
    x = 19,743,622,144/66,370
  6. Step 6: Final answer
    x = 297,478.11

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.