Home / 117.18-161.68-68.03

Finding the Fourth Proportional to 117.18, 161.68 and 68.03

Calculator

Solution

The fourth proportional to 117.18, 161.68 and 68.03 is: 93.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.18 : 161.68 = 68.03 : x
  2. Step 2: Convert to fraction form
    117.18/161.68 = 68.03/x
  3. Step 3: Cross multiply
    117.18x = 161.68 × 68.03
  4. Step 4: Simplify right side
    117.18x = 10,999.26
  5. Step 5: Solve for x
    x = 10,999.26/117.18
  6. Step 6: Final answer
    x = 93.87

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.