Home / 178.80-246.90-137.76

Finding the Fourth Proportional to 178.80, 246.90 and 137.76

Calculator

Solution

The fourth proportional to 178.80, 246.90 and 137.76 is: 190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.80 : 246.90 = 137.76 : x
  2. Step 2: Convert to fraction form
    178.80/246.90 = 137.76/x
  3. Step 3: Cross multiply
    178.80x = 246.90 × 137.76
  4. Step 4: Simplify right side
    178.80x = 34,012.94
  5. Step 5: Solve for x
    x = 34,012.94/178.80
  6. Step 6: Final answer
    x = 190.23

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.