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Finding the Third Proportional to 79,942.50 and 117,321.75

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Solution

The third proportional to 79,942.50 and 117,321.75 is: 172,178.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,942.50 : 117,321.75 = 117,321.75 : x
  2. Step 2: Convert to fraction form
    79,942.50/117,321.75 = 117,321.75/x
  3. Step 3: Cross multiply
    79,942.50x = 117,321.75 × 117,321.75
  4. Step 4: Simplify right side
    79,942.50x = 13,764,393,023.06
  5. Step 5: Solve for x
    x = 13,764,393,023.06/79,942.50
  6. Step 6: Final answer
    x = 172,178.67

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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.