Home / 109.79-164.41-100.88

Finding the Fourth Proportional to 109.79, 164.41 and 100.88

Calculator

Solution

The fourth proportional to 109.79, 164.41 and 100.88 is: 151.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.79 : 164.41 = 100.88 : x
  2. Step 2: Convert to fraction form
    109.79/164.41 = 100.88/x
  3. Step 3: Cross multiply
    109.79x = 164.41 × 100.88
  4. Step 4: Simplify right side
    109.79x = 16,584.35
  5. Step 5: Solve for x
    x = 16,584.35/109.79
  6. Step 6: Final answer
    x = 151.06

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.