Home / 189,989.82-262,193.67-105,105.42

Finding the Fourth Proportional to 189,989.82, 262,193.67 and 105,105.42

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Solution

The fourth proportional to 189,989.82, 262,193.67 and 105,105.42 is: 145,049.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,989.82 : 262,193.67 = 105,105.42 : x
  2. Step 2: Convert to fraction form
    189,989.82/262,193.67 = 105,105.42/x
  3. Step 3: Cross multiply
    189,989.82x = 262,193.67 × 105,105.42
  4. Step 4: Simplify right side
    189,989.82x = 27,557,975,806.69
  5. Step 5: Solve for x
    x = 27,557,975,806.69/189,989.82
  6. Step 6: Final answer
    x = 145,049.75

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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.