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Finding the Third Proportional to 79,658 and 120,100

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Solution

The third proportional to 79,658 and 120,100 is: 181,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,658 : 120,100 = 120,100 : x
  2. Step 2: Convert to fraction form
    79,658/120,100 = 120,100/x
  3. Step 3: Cross multiply
    79,658x = 120,100 × 120,100
  4. Step 4: Simplify right side
    79,658x = 14,424,010,000
  5. Step 5: Solve for x
    x = 14,424,010,000/79,658
  6. Step 6: Final answer
    x = 181,074.22

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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.