Home / 156.37-215.59-98.05

Finding the Fourth Proportional to 156.37, 215.59 and 98.05

Calculator

Solution

The fourth proportional to 156.37, 215.59 and 98.05 is: 135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.37 : 215.59 = 98.05 : x
  2. Step 2: Convert to fraction form
    156.37/215.59 = 98.05/x
  3. Step 3: Cross multiply
    156.37x = 215.59 × 98.05
  4. Step 4: Simplify right side
    156.37x = 21,138.60
  5. Step 5: Solve for x
    x = 21,138.60/156.37
  6. Step 6: Final answer
    x = 135.18

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.