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Finding the Fourth Proportional to 133,381.80, 200,072.70 and 118,866.60

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Solution

The fourth proportional to 133,381.80, 200,072.70 and 118,866.60 is: 178,299.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,381.80 : 200,072.70 = 118,866.60 : x
  2. Step 2: Convert to fraction form
    133,381.80/200,072.70 = 118,866.60/x
  3. Step 3: Cross multiply
    133,381.80x = 200,072.70 × 118,866.60
  4. Step 4: Simplify right side
    133,381.80x = 23,781,961,601.82
  5. Step 5: Solve for x
    x = 23,781,961,601.82/133,381.80
  6. Step 6: Final answer
    x = 178,299.90

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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.