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Finding the Fourth Proportional to 133,644.80, 200,408.40 and 40,128.80

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Solution

The fourth proportional to 133,644.80, 200,408.40 and 40,128.80 is: 60,175.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,644.80 : 200,408.40 = 40,128.80 : x
  2. Step 2: Convert to fraction form
    133,644.80/200,408.40 = 40,128.80/x
  3. Step 3: Cross multiply
    133,644.80x = 200,408.40 × 40,128.80
  4. Step 4: Simplify right side
    133,644.80x = 8,042,148,601.92
  5. Step 5: Solve for x
    x = 8,042,148,601.92/133,644.80
  6. Step 6: Final answer
    x = 60,175.54

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1.5x scale

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.