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Finding the Fourth Proportional to 139,601.43, 192,651.45 and 75,939.39

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Solution

The fourth proportional to 139,601.43, 192,651.45 and 75,939.39 is: 104,797.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,601.43 : 192,651.45 = 75,939.39 : x
  2. Step 2: Convert to fraction form
    139,601.43/192,651.45 = 75,939.39/x
  3. Step 3: Cross multiply
    139,601.43x = 192,651.45 × 75,939.39
  4. Step 4: Simplify right side
    139,601.43x = 14,629,833,595.62
  5. Step 5: Solve for x
    x = 14,629,833,595.62/139,601.43
  6. Step 6: Final answer
    x = 104,797.16

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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.