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Finding the Third Proportional to 78,928 and 120,741

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Solution

The third proportional to 78,928 and 120,741 is: 184,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928 : 120,741 = 120,741 : x
  2. Step 2: Convert to fraction form
    78,928/120,741 = 120,741/x
  3. Step 3: Cross multiply
    78,928x = 120,741 × 120,741
  4. Step 4: Simplify right side
    78,928x = 14,578,389,081
  5. Step 5: Solve for x
    x = 14,578,389,081/78,928
  6. Step 6: Final answer
    x = 184,704.91

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.