Home / 259,018.11-388,589.37-99,091.43

Finding the Fourth Proportional to 259,018.11, 388,589.37 and 99,091.43

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Solution

The fourth proportional to 259,018.11, 388,589.37 and 99,091.43 is: 148,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,018.11 : 388,589.37 = 99,091.43 : x
  2. Step 2: Convert to fraction form
    259,018.11/388,589.37 = 99,091.43/x
  3. Step 3: Cross multiply
    259,018.11x = 388,589.37 × 99,091.43
  4. Step 4: Simplify right side
    259,018.11x = 38,505,874,413.15
  5. Step 5: Solve for x
    x = 38,505,874,413.15/259,018.11
  6. Step 6: Final answer
    x = 148,660.93

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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.