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Finding the Third Proportional to 124,659 and 186,489

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Solution

The third proportional to 124,659 and 186,489 is: 278,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,659 : 186,489 = 186,489 : x
  2. Step 2: Convert to fraction form
    124,659/186,489 = 186,489/x
  3. Step 3: Cross multiply
    124,659x = 186,489 × 186,489
  4. Step 4: Simplify right side
    124,659x = 34,778,147,121
  5. Step 5: Solve for x
    x = 34,778,147,121/124,659
  6. Step 6: Final answer
    x = 278,986.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.