Home / 118.02-162.85-71.40

Finding the Fourth Proportional to 118.02, 162.85 and 71.40

Calculator

Solution

The fourth proportional to 118.02, 162.85 and 71.40 is: 98.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.02 : 162.85 = 71.40 : x
  2. Step 2: Convert to fraction form
    118.02/162.85 = 71.40/x
  3. Step 3: Cross multiply
    118.02x = 162.85 × 71.40
  4. Step 4: Simplify right side
    118.02x = 11,627.14
  5. Step 5: Solve for x
    x = 11,627.14/118.02
  6. Step 6: Final answer
    x = 98.52

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.