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Finding the Third Proportional to 120,640.50 and 177,447

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Solution

The third proportional to 120,640.50 and 177,447 is: 261,002.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,640.50 : 177,447 = 177,447 : x
  2. Step 2: Convert to fraction form
    120,640.50/177,447 = 177,447/x
  3. Step 3: Cross multiply
    120,640.50x = 177,447 × 177,447
  4. Step 4: Simplify right side
    120,640.50x = 31,487,437,809
  5. Step 5: Solve for x
    x = 31,487,437,809/120,640.50
  6. Step 6: Final answer
    x = 261,002.22

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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.