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Finding the Third Proportional to 120,611 and 177,305

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Solution

The third proportional to 120,611 and 177,305 is: 260,648.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,611 : 177,305 = 177,305 : x
  2. Step 2: Convert to fraction form
    120,611/177,305 = 177,305/x
  3. Step 3: Cross multiply
    120,611x = 177,305 × 177,305
  4. Step 4: Simplify right side
    120,611x = 31,437,063,025
  5. Step 5: Solve for x
    x = 31,437,063,025/120,611
  6. Step 6: Final answer
    x = 260,648.39

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.