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Finding the Fourth Proportional to 149,660.80, 224,491.20 and 137,413.60

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Solution

The fourth proportional to 149,660.80, 224,491.20 and 137,413.60 is: 206,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,660.80 : 224,491.20 = 137,413.60 : x
  2. Step 2: Convert to fraction form
    149,660.80/224,491.20 = 137,413.60/x
  3. Step 3: Cross multiply
    149,660.80x = 224,491.20 × 137,413.60
  4. Step 4: Simplify right side
    149,660.80x = 30,848,143,960.32
  5. Step 5: Solve for x
    x = 30,848,143,960.32/149,660.80
  6. Step 6: Final answer
    x = 206,120.40

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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.