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Finding the Third Proportional to 75,782 and 159,420

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Solution

The third proportional to 75,782 and 159,420 is: 335,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,782 : 159,420 = 159,420 : x
  2. Step 2: Convert to fraction form
    75,782/159,420 = 159,420/x
  3. Step 3: Cross multiply
    75,782x = 159,420 × 159,420
  4. Step 4: Simplify right side
    75,782x = 25,414,736,400
  5. Step 5: Solve for x
    x = 25,414,736,400/75,782
  6. Step 6: Final answer
    x = 335,366.40

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.