Home / 100,669.43-151,120.79-54,013.43

Finding the Fourth Proportional to 100,669.43, 151,120.79 and 54,013.43

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Solution

The fourth proportional to 100,669.43, 151,120.79 and 54,013.43 is: 81,082.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,669.43 : 151,120.79 = 54,013.43 : x
  2. Step 2: Convert to fraction form
    100,669.43/151,120.79 = 54,013.43/x
  3. Step 3: Cross multiply
    100,669.43x = 151,120.79 × 54,013.43
  4. Step 4: Simplify right side
    100,669.43x = 8,162,551,942.14
  5. Step 5: Solve for x
    x = 8,162,551,942.14/100,669.43
  6. Step 6: Final answer
    x = 81,082.73

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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.