Home / 198,949.28-298,336.36-105,433.12

Finding the Fourth Proportional to 198,949.28, 298,336.36 and 105,433.12

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Solution

The fourth proportional to 198,949.28, 298,336.36 and 105,433.12 is: 158,103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,949.28 : 298,336.36 = 105,433.12 : x
  2. Step 2: Convert to fraction form
    198,949.28/298,336.36 = 105,433.12/x
  3. Step 3: Cross multiply
    198,949.28x = 298,336.36 × 105,433.12
  4. Step 4: Simplify right side
    198,949.28x = 31,454,533,244.24
  5. Step 5: Solve for x
    x = 31,454,533,244.24/198,949.28
  6. Step 6: Final answer
    x = 158,103.28

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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.