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Finding the Third Proportional to 77,832 and 171,216

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Solution

The third proportional to 77,832 and 171,216 is: 376,643.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,832 : 171,216 = 171,216 : x
  2. Step 2: Convert to fraction form
    77,832/171,216 = 171,216/x
  3. Step 3: Cross multiply
    77,832x = 171,216 × 171,216
  4. Step 4: Simplify right side
    77,832x = 29,314,918,656
  5. Step 5: Solve for x
    x = 29,314,918,656/77,832
  6. Step 6: Final answer
    x = 376,643.52

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.