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Finding the Fourth Proportional to 133,456.10, 200,135.55 and 66,874.10

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Solution

The fourth proportional to 133,456.10, 200,135.55 and 66,874.10 is: 100,286.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,456.10 : 200,135.55 = 66,874.10 : x
  2. Step 2: Convert to fraction form
    133,456.10/200,135.55 = 66,874.10/x
  3. Step 3: Cross multiply
    133,456.10x = 200,135.55 × 66,874.10
  4. Step 4: Simplify right side
    133,456.10x = 13,383,884,784.26
  5. Step 5: Solve for x
    x = 13,383,884,784.26/133,456.10
  6. Step 6: Final answer
    x = 100,286.80

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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.