Home / 202.38-279.22-123.74

Finding the Fourth Proportional to 202.38, 279.22 and 123.74

Calculator

Solution

The fourth proportional to 202.38, 279.22 and 123.74 is: 170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.38 : 279.22 = 123.74 : x
  2. Step 2: Convert to fraction form
    202.38/279.22 = 123.74/x
  3. Step 3: Cross multiply
    202.38x = 279.22 × 123.74
  4. Step 4: Simplify right side
    202.38x = 34,550.68
  5. Step 5: Solve for x
    x = 34,550.68/202.38
  6. Step 6: Final answer
    x = 170.72

Related Problems

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.