Home / 107.42-161.17-53.30

Finding the Fourth Proportional to 107.42, 161.17 and 53.30

Calculator

Solution

The fourth proportional to 107.42, 161.17 and 53.30 is: 79.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.42 : 161.17 = 53.30 : x
  2. Step 2: Convert to fraction form
    107.42/161.17 = 53.30/x
  3. Step 3: Cross multiply
    107.42x = 161.17 × 53.30
  4. Step 4: Simplify right side
    107.42x = 8,590.36
  5. Step 5: Solve for x
    x = 8,590.36/107.42
  6. Step 6: Final answer
    x = 79.97

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.