Home / 105.41-157.85-89.21

Finding the Fourth Proportional to 105.41, 157.85 and 89.21

Calculator

Solution

The fourth proportional to 105.41, 157.85 and 89.21 is: 133.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.41 : 157.85 = 89.21 : x
  2. Step 2: Convert to fraction form
    105.41/157.85 = 89.21/x
  3. Step 3: Cross multiply
    105.41x = 157.85 × 89.21
  4. Step 4: Simplify right side
    105.41x = 14,081.35
  5. Step 5: Solve for x
    x = 14,081.35/105.41
  6. Step 6: Final answer
    x = 133.59

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.