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Finding the Fourth Proportional to 133,720.38, 200,580.57 and 54,780.75

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Solution

The fourth proportional to 133,720.38, 200,580.57 and 54,780.75 is: 82,171.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,720.38 : 200,580.57 = 54,780.75 : x
  2. Step 2: Convert to fraction form
    133,720.38/200,580.57 = 54,780.75/x
  3. Step 3: Cross multiply
    133,720.38x = 200,580.57 × 54,780.75
  4. Step 4: Simplify right side
    133,720.38x = 10,987,954,060.03
  5. Step 5: Solve for x
    x = 10,987,954,060.03/133,720.38
  6. Step 6: Final answer
    x = 82,171.13

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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.