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Finding the Fourth Proportional to 139,590.37, 192,628.87 and 82,232.05

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Solution

The fourth proportional to 139,590.37, 192,628.87 and 82,232.05 is: 113,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,590.37 : 192,628.87 = 82,232.05 : x
  2. Step 2: Convert to fraction form
    139,590.37/192,628.87 = 82,232.05/x
  3. Step 3: Cross multiply
    139,590.37x = 192,628.87 × 82,232.05
  4. Step 4: Simplify right side
    139,590.37x = 15,840,266,869.28
  5. Step 5: Solve for x
    x = 15,840,266,869.28/139,590.37
  6. Step 6: Final answer
    x = 113,476.79

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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.