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Finding the Third Proportional to 79,343.50 and 122,934

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Solution

The third proportional to 79,343.50 and 122,934 is: 190,472.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,343.50 : 122,934 = 122,934 : x
  2. Step 2: Convert to fraction form
    79,343.50/122,934 = 122,934/x
  3. Step 3: Cross multiply
    79,343.50x = 122,934 × 122,934
  4. Step 4: Simplify right side
    79,343.50x = 15,112,768,356
  5. Step 5: Solve for x
    x = 15,112,768,356/79,343.50
  6. Step 6: Final answer
    x = 190,472.67

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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.