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Finding the Third Proportional to 66,072 and 142,512

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Solution

The third proportional to 66,072 and 142,512 is: 307,386.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,072 : 142,512 = 142,512 : x
  2. Step 2: Convert to fraction form
    66,072/142,512 = 142,512/x
  3. Step 3: Cross multiply
    66,072x = 142,512 × 142,512
  4. Step 4: Simplify right side
    66,072x = 20,309,670,144
  5. Step 5: Solve for x
    x = 20,309,670,144/66,072
  6. Step 6: Final answer
    x = 307,386.94

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.