Home / 198,629.65-274,114.22-107,991.71

Finding the Fourth Proportional to 198,629.65, 274,114.22 and 107,991.71

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Solution

The fourth proportional to 198,629.65, 274,114.22 and 107,991.71 is: 149,031.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,629.65 : 274,114.22 = 107,991.71 : x
  2. Step 2: Convert to fraction form
    198,629.65/274,114.22 = 107,991.71/x
  3. Step 3: Cross multiply
    198,629.65x = 274,114.22 × 107,991.71
  4. Step 4: Simplify right side
    198,629.65x = 29,602,063,353.12
  5. Step 5: Solve for x
    x = 29,602,063,353.12/198,629.65
  6. Step 6: Final answer
    x = 149,031.44

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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.