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Finding the Fourth Proportional to 139,297.59, 192,231.09 and 75,635.37

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Solution

The fourth proportional to 139,297.59, 192,231.09 and 75,635.37 is: 104,377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,297.59 : 192,231.09 = 75,635.37 : x
  2. Step 2: Convert to fraction form
    139,297.59/192,231.09 = 75,635.37/x
  3. Step 3: Cross multiply
    139,297.59x = 192,231.09 × 75,635.37
  4. Step 4: Simplify right side
    139,297.59x = 14,539,469,617.65
  5. Step 5: Solve for x
    x = 14,539,469,617.65/139,297.59
  6. Step 6: Final answer
    x = 104,377.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.