Home / 198,669.10-298,190.94-72,431.37

Finding the Fourth Proportional to 198,669.10, 298,190.94 and 72,431.37

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Solution

The fourth proportional to 198,669.10, 298,190.94 and 72,431.37 is: 108,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,669.10 : 298,190.94 = 72,431.37 : x
  2. Step 2: Convert to fraction form
    198,669.10/298,190.94 = 72,431.37/x
  3. Step 3: Cross multiply
    198,669.10x = 298,190.94 × 72,431.37
  4. Step 4: Simplify right side
    198,669.10x = 21,598,378,305.79
  5. Step 5: Solve for x
    x = 21,598,378,305.79/198,669.10
  6. Step 6: Final answer
    x = 108,715.34

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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.