Home / 189,939.38-284,974.08-71,644.54

Finding the Fourth Proportional to 189,939.38, 284,974.08 and 71,644.54

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Solution

The fourth proportional to 189,939.38, 284,974.08 and 71,644.54 is: 107,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,939.38 : 284,974.08 = 71,644.54 : x
  2. Step 2: Convert to fraction form
    189,939.38/284,974.08 = 71,644.54/x
  3. Step 3: Cross multiply
    189,939.38x = 284,974.08 × 71,644.54
  4. Step 4: Simplify right side
    189,939.38x = 20,416,836,873.52
  5. Step 5: Solve for x
    x = 20,416,836,873.52/189,939.38
  6. Step 6: Final answer
    x = 107,491.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.