Home / 198,785.73-298,177.23-80,455.36

Finding the Fourth Proportional to 198,785.73, 298,177.23 and 80,455.36

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Solution

The fourth proportional to 198,785.73, 298,177.23 and 80,455.36 is: 120,682.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,785.73 : 298,177.23 = 80,455.36 : x
  2. Step 2: Convert to fraction form
    198,785.73/298,177.23 = 80,455.36/x
  3. Step 3: Cross multiply
    198,785.73x = 298,177.23 × 80,455.36
  4. Step 4: Simplify right side
    198,785.73x = 23,989,955,981.18
  5. Step 5: Solve for x
    x = 23,989,955,981.18/198,785.73
  6. Step 6: Final answer
    x = 120,682.49

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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.