Home / 173.80-239.94-121.64

Finding the Fourth Proportional to 173.80, 239.94 and 121.64

Calculator

Solution

The fourth proportional to 173.80, 239.94 and 121.64 is: 167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.80 : 239.94 = 121.64 : x
  2. Step 2: Convert to fraction form
    173.80/239.94 = 121.64/x
  3. Step 3: Cross multiply
    173.80x = 239.94 × 121.64
  4. Step 4: Simplify right side
    173.80x = 29,186.30
  5. Step 5: Solve for x
    x = 29,186.30/173.80
  6. Step 6: Final answer
    x = 167.93

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.