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Finding the Fourth Proportional to 133,665.47, 200,811.72 and 126,099.66

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Solution

The fourth proportional to 133,665.47, 200,811.72 and 126,099.66 is: 189,445.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,665.47 : 200,811.72 = 126,099.66 : x
  2. Step 2: Convert to fraction form
    133,665.47/200,811.72 = 126,099.66/x
  3. Step 3: Cross multiply
    133,665.47x = 200,811.72 × 126,099.66
  4. Step 4: Simplify right side
    133,665.47x = 25,322,289,616.02
  5. Step 5: Solve for x
    x = 25,322,289,616.02/133,665.47
  6. Step 6: Final answer
    x = 189,445.27

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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.