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Finding the Fourth Proportional to 133,390.05, 200,011.23 and 54,559.65

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Solution

The fourth proportional to 133,390.05, 200,011.23 and 54,559.65 is: 81,809.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,390.05 : 200,011.23 = 54,559.65 : x
  2. Step 2: Convert to fraction form
    133,390.05/200,011.23 = 54,559.65/x
  3. Step 3: Cross multiply
    133,390.05x = 200,011.23 × 54,559.65
  4. Step 4: Simplify right side
    133,390.05x = 10,912,542,704.87
  5. Step 5: Solve for x
    x = 10,912,542,704.87/133,390.05
  6. Step 6: Final answer
    x = 81,809.27

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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.