Home / 181.85-272.61-90.45

Finding the Fourth Proportional to 181.85, 272.61 and 90.45

Calculator

Solution

The fourth proportional to 181.85, 272.61 and 90.45 is: 135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.85 : 272.61 = 90.45 : x
  2. Step 2: Convert to fraction form
    181.85/272.61 = 90.45/x
  3. Step 3: Cross multiply
    181.85x = 272.61 × 90.45
  4. Step 4: Simplify right side
    181.85x = 24,657.57
  5. Step 5: Solve for x
    x = 24,657.57/181.85
  6. Step 6: Final answer
    x = 135.60

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.