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Finding the Fourth Proportional to 139,087.26, 208,651.73 and 50,361.57

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Solution

The fourth proportional to 139,087.26, 208,651.73 and 50,361.57 is: 75,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,087.26 : 208,651.73 = 50,361.57 : x
  2. Step 2: Convert to fraction form
    139,087.26/208,651.73 = 50,361.57/x
  3. Step 3: Cross multiply
    139,087.26x = 208,651.73 × 50,361.57
  4. Step 4: Simplify right side
    139,087.26x = 10,508,028,454.21
  5. Step 5: Solve for x
    x = 10,508,028,454.21/139,087.26
  6. Step 6: Final answer
    x = 75,549.90

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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.