Home / 158.66-218.93-93.15

Finding the Fourth Proportional to 158.66, 218.93 and 93.15

Calculator

Solution

The fourth proportional to 158.66, 218.93 and 93.15 is: 128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.66 : 218.93 = 93.15 : x
  2. Step 2: Convert to fraction form
    158.66/218.93 = 93.15/x
  3. Step 3: Cross multiply
    158.66x = 218.93 × 93.15
  4. Step 4: Simplify right side
    158.66x = 20,393.56
  5. Step 5: Solve for x
    x = 20,393.56/158.66
  6. Step 6: Final answer
    x = 128.54

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.