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Finding the Fourth Proportional to 159,359.69, 219,953.73 and 91,375.44

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Solution

The fourth proportional to 159,359.69, 219,953.73 and 91,375.44 is: 126,119.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,359.69 : 219,953.73 = 91,375.44 : x
  2. Step 2: Convert to fraction form
    159,359.69/219,953.73 = 91,375.44/x
  3. Step 3: Cross multiply
    159,359.69x = 219,953.73 × 91,375.44
  4. Step 4: Simplify right side
    159,359.69x = 20,098,368,858.39
  5. Step 5: Solve for x
    x = 20,098,368,858.39/159,359.69
  6. Step 6: Final answer
    x = 126,119.53

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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.