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Finding the Fourth Proportional to 159,273.61, 219,793.77 and 91,330.40

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Solution

The fourth proportional to 159,273.61, 219,793.77 and 91,330.40 is: 126,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,273.61 : 219,793.77 = 91,330.40 : x
  2. Step 2: Convert to fraction form
    159,273.61/219,793.77 = 91,330.40/x
  3. Step 3: Cross multiply
    159,273.61x = 219,793.77 × 91,330.40
  4. Step 4: Simplify right side
    159,273.61x = 20,073,853,481.09
  5. Step 5: Solve for x
    x = 20,073,853,481.09/159,273.61
  6. Step 6: Final answer
    x = 126,033.77

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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.