Home / 198,760.94-298,141.41-80,515.32

Finding the Fourth Proportional to 198,760.94, 298,141.41 and 80,515.32

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Solution

The fourth proportional to 198,760.94, 298,141.41 and 80,515.32 is: 120,772.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,760.94 : 298,141.41 = 80,515.32 : x
  2. Step 2: Convert to fraction form
    198,760.94/298,141.41 = 80,515.32/x
  3. Step 3: Cross multiply
    198,760.94x = 298,141.41 × 80,515.32
  4. Step 4: Simplify right side
    198,760.94x = 24,004,949,762.40
  5. Step 5: Solve for x
    x = 24,004,949,762.40/198,760.94
  6. Step 6: Final answer
    x = 120,772.97

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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.