Home / 196-293.78-87.72

Finding the Fourth Proportional to 196, 293.78 and 87.72

Calculator

Solution

The fourth proportional to 196, 293.78 and 87.72 is: 131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    196 : 293.78 = 87.72 : x
  2. Step 2: Convert to fraction form
    196/293.78 = 87.72/x
  3. Step 3: Cross multiply
    196x = 293.78 × 87.72
  4. Step 4: Simplify right side
    196x = 25,770.38
  5. Step 5: Solve for x
    x = 25,770.38/196
  6. Step 6: Final answer
    x = 131.48

Related Problems

Find fourth proportional to 98, 146.89 and 43.86
Half scale
Find fourth proportional to 392, 587.56 and 175.44
Double scale
Find fourth proportional to 197, 295.28 and 88.72
Similar ratio
Find fourth proportional to 294, 440.67 and 131.58
1.5x scale

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.