Home / 107.54-161.30-35.40

Finding the Fourth Proportional to 107.54, 161.30 and 35.40

Calculator

Solution

The fourth proportional to 107.54, 161.30 and 35.40 is: 53.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.54 : 161.30 = 35.40 : x
  2. Step 2: Convert to fraction form
    107.54/161.30 = 35.40/x
  3. Step 3: Cross multiply
    107.54x = 161.30 × 35.40
  4. Step 4: Simplify right side
    107.54x = 5,710.11
  5. Step 5: Solve for x
    x = 5,710.11/107.54
  6. Step 6: Final answer
    x = 53.10

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.