Home / 139.52-209.30-58.37

Finding the Fourth Proportional to 139.52, 209.30 and 58.37

Calculator

Solution

The fourth proportional to 139.52, 209.30 and 58.37 is: 87.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.52 : 209.30 = 58.37 : x
  2. Step 2: Convert to fraction form
    139.52/209.30 = 58.37/x
  3. Step 3: Cross multiply
    139.52x = 209.30 × 58.37
  4. Step 4: Simplify right side
    139.52x = 12,215.50
  5. Step 5: Solve for x
    x = 12,215.50/139.52
  6. Step 6: Final answer
    x = 87.56

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.