Home / 113.87-157.21-76.97

Finding the Fourth Proportional to 113.87, 157.21 and 76.97

Calculator

Solution

The fourth proportional to 113.87, 157.21 and 76.97 is: 106.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.87 : 157.21 = 76.97 : x
  2. Step 2: Convert to fraction form
    113.87/157.21 = 76.97/x
  3. Step 3: Cross multiply
    113.87x = 157.21 × 76.97
  4. Step 4: Simplify right side
    113.87x = 12,100.65
  5. Step 5: Solve for x
    x = 12,100.65/113.87
  6. Step 6: Final answer
    x = 106.26

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.