Home / 86.63-119.60-68.16

Finding the Fourth Proportional to 86.63, 119.60 and 68.16

Calculator

Solution

The fourth proportional to 86.63, 119.60 and 68.16 is: 94.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86.63 : 119.60 = 68.16 : x
  2. Step 2: Convert to fraction form
    86.63/119.60 = 68.16/x
  3. Step 3: Cross multiply
    86.63x = 119.60 × 68.16
  4. Step 4: Simplify right side
    86.63x = 8,151.60
  5. Step 5: Solve for x
    x = 8,151.60/86.63
  6. Step 6: Final answer
    x = 94.10

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.