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Finding the Fourth Proportional to 198,627.65, 274,111.46 and 107,989.71

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Solution

The fourth proportional to 198,627.65, 274,111.46 and 107,989.71 is: 149,028.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,627.65 : 274,111.46 = 107,989.71 : x
  2. Step 2: Convert to fraction form
    198,627.65/274,111.46 = 107,989.71/x
  3. Step 3: Cross multiply
    198,627.65x = 274,111.46 × 107,989.71
  4. Step 4: Simplify right side
    198,627.65x = 29,601,217,452.05
  5. Step 5: Solve for x
    x = 29,601,217,452.05/198,627.65
  6. Step 6: Final answer
    x = 149,028.69

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1.5x scale

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.