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Finding the Fourth Proportional to 139,093.85, 208,640.78 and 33,913.73

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Solution

The fourth proportional to 139,093.85, 208,640.78 and 33,913.73 is: 50,870.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,093.85 : 208,640.78 = 33,913.73 : x
  2. Step 2: Convert to fraction form
    139,093.85/208,640.78 = 33,913.73/x
  3. Step 3: Cross multiply
    139,093.85x = 208,640.78 × 33,913.73
  4. Step 4: Simplify right side
    139,093.85x = 7,075,787,079.91
  5. Step 5: Solve for x
    x = 7,075,787,079.91/139,093.85
  6. Step 6: Final answer
    x = 50,870.60

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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.