Home / 112,974.18-155,906.46-61,989.54

Finding the Fourth Proportional to 112,974.18, 155,906.46 and 61,989.54

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Solution

The fourth proportional to 112,974.18, 155,906.46 and 61,989.54 is: 85,546.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,974.18 : 155,906.46 = 61,989.54 : x
  2. Step 2: Convert to fraction form
    112,974.18/155,906.46 = 61,989.54/x
  3. Step 3: Cross multiply
    112,974.18x = 155,906.46 × 61,989.54
  4. Step 4: Simplify right side
    112,974.18x = 9,664,569,738.43
  5. Step 5: Solve for x
    x = 9,664,569,738.43/112,974.18
  6. Step 6: Final answer
    x = 85,546.71

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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.