Home / 154,413.21-231,659.74-90,425.39

Finding the Fourth Proportional to 154,413.21, 231,659.74 and 90,425.39

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Solution

The fourth proportional to 154,413.21, 231,659.74 and 90,425.39 is: 135,661.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,413.21 : 231,659.74 = 90,425.39 : x
  2. Step 2: Convert to fraction form
    154,413.21/231,659.74 = 90,425.39/x
  3. Step 3: Cross multiply
    154,413.21x = 231,659.74 × 90,425.39
  4. Step 4: Simplify right side
    154,413.21x = 20,947,922,336.80
  5. Step 5: Solve for x
    x = 20,947,922,336.80/154,413.21
  6. Step 6: Final answer
    x = 135,661.47

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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.