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Finding the Fourth Proportional to 133,399.78, 200,134.60 and 39,905.53

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Solution

The fourth proportional to 133,399.78, 200,134.60 and 39,905.53 is: 59,868.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,399.78 : 200,134.60 = 39,905.53 : x
  2. Step 2: Convert to fraction form
    133,399.78/200,134.60 = 39,905.53/x
  3. Step 3: Cross multiply
    133,399.78x = 200,134.60 × 39,905.53
  4. Step 4: Simplify right side
    133,399.78x = 7,986,476,684.24
  5. Step 5: Solve for x
    x = 7,986,476,684.24/133,399.78
  6. Step 6: Final answer
    x = 59,868.74

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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.