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Finding the Fourth Proportional to 201,115.70, 301,673.55 and 131,131.70

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Solution

The fourth proportional to 201,115.70, 301,673.55 and 131,131.70 is: 196,697.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,115.70 : 301,673.55 = 131,131.70 : x
  2. Step 2: Convert to fraction form
    201,115.70/301,673.55 = 131,131.70/x
  3. Step 3: Cross multiply
    201,115.70x = 301,673.55 × 131,131.70
  4. Step 4: Simplify right side
    201,115.70x = 39,558,965,456.54
  5. Step 5: Solve for x
    x = 39,558,965,456.54/201,115.70
  6. Step 6: Final answer
    x = 196,697.55

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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.