Home / 198,887.45-298,238.68-72,439.67

Finding the Fourth Proportional to 198,887.45, 298,238.68 and 72,439.67

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Solution

The fourth proportional to 198,887.45, 298,238.68 and 72,439.67 is: 108,625.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,887.45 : 298,238.68 = 72,439.67 : x
  2. Step 2: Convert to fraction form
    198,887.45/298,238.68 = 72,439.67/x
  3. Step 3: Cross multiply
    198,887.45x = 298,238.68 × 72,439.67
  4. Step 4: Simplify right side
    198,887.45x = 21,604,310,922.73
  5. Step 5: Solve for x
    x = 21,604,310,922.73/198,887.45
  6. Step 6: Final answer
    x = 108,625.81

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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.