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Finding the Fourth Proportional to 198,555.66, 274,008.63 and 107,911.87

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Solution

The fourth proportional to 198,555.66, 274,008.63 and 107,911.87 is: 148,919.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,555.66 : 274,008.63 = 107,911.87 : x
  2. Step 2: Convert to fraction form
    198,555.66/274,008.63 = 107,911.87/x
  3. Step 3: Cross multiply
    198,555.66x = 274,008.63 × 107,911.87
  4. Step 4: Simplify right side
    198,555.66x = 29,568,782,974.42
  5. Step 5: Solve for x
    x = 29,568,782,974.42/198,555.66
  6. Step 6: Final answer
    x = 148,919.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.