Home / 139.28-208.95-52.62

Finding the Fourth Proportional to 139.28, 208.95 and 52.62

Calculator

Solution

The fourth proportional to 139.28, 208.95 and 52.62 is: 78.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.28 : 208.95 = 52.62 : x
  2. Step 2: Convert to fraction form
    139.28/208.95 = 52.62/x
  3. Step 3: Cross multiply
    139.28x = 208.95 × 52.62
  4. Step 4: Simplify right side
    139.28x = 10,994.26
  5. Step 5: Solve for x
    x = 10,994.26/139.28
  6. Step 6: Final answer
    x = 78.94

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.