Home / 198,456.45-273,868.81-107,811.69

Finding the Fourth Proportional to 198,456.45, 273,868.81 and 107,811.69

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Solution

The fourth proportional to 198,456.45, 273,868.81 and 107,811.69 is: 148,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,456.45 : 273,868.81 = 107,811.69 : x
  2. Step 2: Convert to fraction form
    198,456.45/273,868.81 = 107,811.69/x
  3. Step 3: Cross multiply
    198,456.45x = 273,868.81 × 107,811.69
  4. Step 4: Simplify right side
    198,456.45x = 29,526,258,974.86
  5. Step 5: Solve for x
    x = 29,526,258,974.86/198,456.45
  6. Step 6: Final answer
    x = 148,779.54

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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.