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Finding the Fourth Proportional to 139,438.62, 209,183.04 and 50,816.52

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Solution

The fourth proportional to 139,438.62, 209,183.04 and 50,816.52 is: 76,233.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,438.62 : 209,183.04 = 50,816.52 : x
  2. Step 2: Convert to fraction form
    139,438.62/209,183.04 = 50,816.52/x
  3. Step 3: Cross multiply
    139,438.62x = 209,183.04 × 50,816.52
  4. Step 4: Simplify right side
    139,438.62x = 10,629,954,135.82
  5. Step 5: Solve for x
    x = 10,629,954,135.82/139,438.62
  6. Step 6: Final answer
    x = 76,233.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.