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Finding the Third Proportional to 79,078.50 and 122,910.75

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Solution

The third proportional to 79,078.50 and 122,910.75 is: 191,038.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,078.50 : 122,910.75 = 122,910.75 : x
  2. Step 2: Convert to fraction form
    79,078.50/122,910.75 = 122,910.75/x
  3. Step 3: Cross multiply
    79,078.50x = 122,910.75 × 122,910.75
  4. Step 4: Simplify right side
    79,078.50x = 15,107,052,465.56
  5. Step 5: Solve for x
    x = 15,107,052,465.56/79,078.50
  6. Step 6: Final answer
    x = 191,038.68

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.