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Finding the Third Proportional to 83,643 and 180,420

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Solution

The third proportional to 83,643 and 180,420 is: 389,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,643 : 180,420 = 180,420 : x
  2. Step 2: Convert to fraction form
    83,643/180,420 = 180,420/x
  3. Step 3: Cross multiply
    83,643x = 180,420 × 180,420
  4. Step 4: Simplify right side
    83,643x = 32,551,376,400
  5. Step 5: Solve for x
    x = 32,551,376,400/83,643
  6. Step 6: Final answer
    x = 389,170.36

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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.