Home / 118.16-163-76.76

Finding the Fourth Proportional to 118.16, 163 and 76.76

Calculator

Solution

The fourth proportional to 118.16, 163 and 76.76 is: 105.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.16 : 163 = 76.76 : x
  2. Step 2: Convert to fraction form
    118.16/163 = 76.76/x
  3. Step 3: Cross multiply
    118.16x = 163 × 76.76
  4. Step 4: Simplify right side
    118.16x = 12,511.88
  5. Step 5: Solve for x
    x = 12,511.88/118.16
  6. Step 6: Final answer
    x = 105.89

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.