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Finding the Fourth Proportional to 133,473.36, 200,115.54 and 66,865.98

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Solution

The fourth proportional to 133,473.36, 200,115.54 and 66,865.98 is: 100,251.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,473.36 : 200,115.54 = 66,865.98 : x
  2. Step 2: Convert to fraction form
    133,473.36/200,115.54 = 66,865.98/x
  3. Step 3: Cross multiply
    133,473.36x = 200,115.54 × 66,865.98
  4. Step 4: Simplify right side
    133,473.36x = 13,380,921,695.33
  5. Step 5: Solve for x
    x = 13,380,921,695.33/133,473.36
  6. Step 6: Final answer
    x = 100,251.63

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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.