Home / 198,509.81-273,945.27-107,865.78

Finding the Fourth Proportional to 198,509.81, 273,945.27 and 107,865.78

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Solution

The fourth proportional to 198,509.81, 273,945.27 and 107,865.78 is: 148,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,509.81 : 273,945.27 = 107,865.78 : x
  2. Step 2: Convert to fraction form
    198,509.81/273,945.27 = 107,865.78/x
  3. Step 3: Cross multiply
    198,509.81x = 273,945.27 × 107,865.78
  4. Step 4: Simplify right side
    198,509.81x = 29,549,318,996.32
  5. Step 5: Solve for x
    x = 29,549,318,996.32/198,509.81
  6. Step 6: Final answer
    x = 148,855.71

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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.