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Finding the Third Proportional to 66,486 and 147,734

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Solution

The third proportional to 66,486 and 147,734 is: 328,269.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486 : 147,734 = 147,734 : x
  2. Step 2: Convert to fraction form
    66,486/147,734 = 147,734/x
  3. Step 3: Cross multiply
    66,486x = 147,734 × 147,734
  4. Step 4: Simplify right side
    66,486x = 21,825,334,756
  5. Step 5: Solve for x
    x = 21,825,334,756/66,486
  6. Step 6: Final answer
    x = 328,269.63

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.