Home / 198,916.13-274,510.09-108,278

Finding the Fourth Proportional to 198,916.13, 274,510.09 and 108,278

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Solution

The fourth proportional to 198,916.13, 274,510.09 and 108,278 is: 149,426.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,916.13 : 274,510.09 = 108,278 : x
  2. Step 2: Convert to fraction form
    198,916.13/274,510.09 = 108,278/x
  3. Step 3: Cross multiply
    198,916.13x = 274,510.09 × 108,278
  4. Step 4: Simplify right side
    198,916.13x = 29,723,403,525.02
  5. Step 5: Solve for x
    x = 29,723,403,525.02/198,916.13
  6. Step 6: Final answer
    x = 149,426.82

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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.