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Finding the Fourth Proportional to 139,063.56, 206,806.32 and 134,634.92

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Solution

The fourth proportional to 139,063.56, 206,806.32 and 134,634.92 is: 200,220.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063.56 : 206,806.32 = 134,634.92 : x
  2. Step 2: Convert to fraction form
    139,063.56/206,806.32 = 134,634.92/x
  3. Step 3: Cross multiply
    139,063.56x = 206,806.32 × 134,634.92
  4. Step 4: Simplify right side
    139,063.56x = 27,843,352,348.69
  5. Step 5: Solve for x
    x = 27,843,352,348.69/139,063.56
  6. Step 6: Final answer
    x = 200,220.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.