Home / 225,890.06-311,675.96-135,211.56

Finding the Fourth Proportional to 225,890.06, 311,675.96 and 135,211.56

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Solution

The fourth proportional to 225,890.06, 311,675.96 and 135,211.56 is: 186,560.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,890.06 : 311,675.96 = 135,211.56 : x
  2. Step 2: Convert to fraction form
    225,890.06/311,675.96 = 135,211.56/x
  3. Step 3: Cross multiply
    225,890.06x = 311,675.96 × 135,211.56
  4. Step 4: Simplify right side
    225,890.06x = 42,142,192,766.10
  5. Step 5: Solve for x
    x = 42,142,192,766.10/225,890.06
  6. Step 6: Final answer
    x = 186,560.63

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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.