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Finding the Third Proportional to 66,031 and 139,351

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Solution

The third proportional to 66,031 and 139,351 is: 294,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,031 : 139,351 = 139,351 : x
  2. Step 2: Convert to fraction form
    66,031/139,351 = 139,351/x
  3. Step 3: Cross multiply
    66,031x = 139,351 × 139,351
  4. Step 4: Simplify right side
    66,031x = 19,418,701,201
  5. Step 5: Solve for x
    x = 19,418,701,201/66,031
  6. Step 6: Final answer
    x = 294,084.61

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.