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Finding the Fourth Proportional to 198,958.68, 274,563.68 and 108,315.72

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Solution

The fourth proportional to 198,958.68, 274,563.68 and 108,315.72 is: 149,476.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,958.68 : 274,563.68 = 108,315.72 : x
  2. Step 2: Convert to fraction form
    198,958.68/274,563.68 = 108,315.72/x
  3. Step 3: Cross multiply
    198,958.68x = 274,563.68 × 108,315.72
  4. Step 4: Simplify right side
    198,958.68x = 29,739,562,143.47
  5. Step 5: Solve for x
    x = 29,739,562,143.47/198,958.68
  6. Step 6: Final answer
    x = 149,476.07

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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.