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Finding the Fourth Proportional to 133,661.70, 200,330.55 and 77,393.70

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Solution

The fourth proportional to 133,661.70, 200,330.55 and 77,393.70 is: 115,996.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,661.70 : 200,330.55 = 77,393.70 : x
  2. Step 2: Convert to fraction form
    133,661.70/200,330.55 = 77,393.70/x
  3. Step 3: Cross multiply
    133,661.70x = 200,330.55 × 77,393.70
  4. Step 4: Simplify right side
    133,661.70x = 15,504,322,487.54
  5. Step 5: Solve for x
    x = 15,504,322,487.54/133,661.70
  6. Step 6: Final answer
    x = 115,996.75

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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.