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Finding the Fourth Proportional to 139,293.86, 192,226.53 and 75,631.70

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Solution

The fourth proportional to 139,293.86, 192,226.53 and 75,631.70 is: 104,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,293.86 : 192,226.53 = 75,631.70 : x
  2. Step 2: Convert to fraction form
    139,293.86/192,226.53 = 75,631.70/x
  3. Step 3: Cross multiply
    139,293.86x = 192,226.53 × 75,631.70
  4. Step 4: Simplify right side
    139,293.86x = 14,538,419,249.00
  5. Step 5: Solve for x
    x = 14,538,419,249.00/139,293.86
  6. Step 6: Final answer
    x = 104,372.29

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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.