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Finding the Third Proportional to 120,783 and 177,622

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Solution

The third proportional to 120,783 and 177,622 is: 261,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,783 : 177,622 = 177,622 : x
  2. Step 2: Convert to fraction form
    120,783/177,622 = 177,622/x
  3. Step 3: Cross multiply
    120,783x = 177,622 × 177,622
  4. Step 4: Simplify right side
    120,783x = 31,549,574,884
  5. Step 5: Solve for x
    x = 31,549,574,884/120,783
  6. Step 6: Final answer
    x = 261,208.74

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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.