Home / 99,912.23-149,942.14-47,321.71

Finding the Fourth Proportional to 99,912.23, 149,942.14 and 47,321.71

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Solution

The fourth proportional to 99,912.23, 149,942.14 and 47,321.71 is: 71,017.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.23 : 149,942.14 = 47,321.71 : x
  2. Step 2: Convert to fraction form
    99,912.23/149,942.14 = 47,321.71/x
  3. Step 3: Cross multiply
    99,912.23x = 149,942.14 × 47,321.71
  4. Step 4: Simplify right side
    99,912.23x = 7,095,517,716.15
  5. Step 5: Solve for x
    x = 7,095,517,716.15/99,912.23
  6. Step 6: Final answer
    x = 71,017.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.