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Finding the Third Proportional to 139,107.75 and 218,452.50

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Solution

The third proportional to 139,107.75 and 218,452.50 is: 343,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,107.75 : 218,452.50 = 218,452.50 : x
  2. Step 2: Convert to fraction form
    139,107.75/218,452.50 = 218,452.50/x
  3. Step 3: Cross multiply
    139,107.75x = 218,452.50 × 218,452.50
  4. Step 4: Simplify right side
    139,107.75x = 47,721,494,756.25
  5. Step 5: Solve for x
    x = 47,721,494,756.25/139,107.75
  6. Step 6: Final answer
    x = 343,054.18

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.