Home / 117.80-176.60-45.64

Finding the Fourth Proportional to 117.80, 176.60 and 45.64

Calculator

Solution

The fourth proportional to 117.80, 176.60 and 45.64 is: 68.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.80 : 176.60 = 45.64 : x
  2. Step 2: Convert to fraction form
    117.80/176.60 = 45.64/x
  3. Step 3: Cross multiply
    117.80x = 176.60 × 45.64
  4. Step 4: Simplify right side
    117.80x = 8,060.02
  5. Step 5: Solve for x
    x = 8,060.02/117.80
  6. Step 6: Final answer
    x = 68.42

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.