Home / 198,389.87-273,821.61-130,413.12

Finding the Fourth Proportional to 198,389.87, 273,821.61 and 130,413.12

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Solution

The fourth proportional to 198,389.87, 273,821.61 and 130,413.12 is: 179,998.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,389.87 : 273,821.61 = 130,413.12 : x
  2. Step 2: Convert to fraction form
    198,389.87/273,821.61 = 130,413.12/x
  3. Step 3: Cross multiply
    198,389.87x = 273,821.61 × 130,413.12
  4. Step 4: Simplify right side
    198,389.87x = 35,709,930,483.52
  5. Step 5: Solve for x
    x = 35,709,930,483.52/198,389.87
  6. Step 6: Final answer
    x = 179,998.76

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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.