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Finding the Third Proportional to 79,643 and 120,486

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Solution

The third proportional to 79,643 and 120,486 is: 182,274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,643 : 120,486 = 120,486 : x
  2. Step 2: Convert to fraction form
    79,643/120,486 = 120,486/x
  3. Step 3: Cross multiply
    79,643x = 120,486 × 120,486
  4. Step 4: Simplify right side
    79,643x = 14,516,876,196
  5. Step 5: Solve for x
    x = 14,516,876,196/79,643
  6. Step 6: Final answer
    x = 182,274.35

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.