Home / 198,715.73-298,675.79-131,477.11

Finding the Fourth Proportional to 198,715.73, 298,675.79 and 131,477.11

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Solution

The fourth proportional to 198,715.73, 298,675.79 and 131,477.11 is: 197,614.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,715.73 : 298,675.79 = 131,477.11 : x
  2. Step 2: Convert to fraction form
    198,715.73/298,675.79 = 131,477.11/x
  3. Step 3: Cross multiply
    198,715.73x = 298,675.79 × 131,477.11
  4. Step 4: Simplify right side
    198,715.73x = 39,269,029,278.17
  5. Step 5: Solve for x
    x = 39,269,029,278.17/198,715.73
  6. Step 6: Final answer
    x = 197,614.09

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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.