Home / 225,815.50-311,673.99-135,191.69

Finding the Fourth Proportional to 225,815.50, 311,673.99 and 135,191.69

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Solution

The fourth proportional to 225,815.50, 311,673.99 and 135,191.69 is: 186,593.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,815.50 : 311,673.99 = 135,191.69 : x
  2. Step 2: Convert to fraction form
    225,815.50/311,673.99 = 135,191.69/x
  3. Step 3: Cross multiply
    225,815.50x = 311,673.99 × 135,191.69
  4. Step 4: Simplify right side
    225,815.50x = 42,135,733,437.14
  5. Step 5: Solve for x
    x = 42,135,733,437.14/225,815.50
  6. Step 6: Final answer
    x = 186,593.63

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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.