Home / 136,609.92-188,478.72-82,137.60

Finding the Fourth Proportional to 136,609.92, 188,478.72 and 82,137.60

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Solution

The fourth proportional to 136,609.92, 188,478.72 and 82,137.60 is: 113,324.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,609.92 : 188,478.72 = 82,137.60 : x
  2. Step 2: Convert to fraction form
    136,609.92/188,478.72 = 82,137.60/x
  3. Step 3: Cross multiply
    136,609.92x = 188,478.72 × 82,137.60
  4. Step 4: Simplify right side
    136,609.92x = 15,481,189,711.87
  5. Step 5: Solve for x
    x = 15,481,189,711.87/136,609.92
  6. Step 6: Final answer
    x = 113,324.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.