Home / 101.16-139.44-93.36

Finding the Fourth Proportional to 101.16, 139.44 and 93.36

Calculator

Solution

The fourth proportional to 101.16, 139.44 and 93.36 is: 128.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.16 : 139.44 = 93.36 : x
  2. Step 2: Convert to fraction form
    101.16/139.44 = 93.36/x
  3. Step 3: Cross multiply
    101.16x = 139.44 × 93.36
  4. Step 4: Simplify right side
    101.16x = 13,018.12
  5. Step 5: Solve for x
    x = 13,018.12/101.16
  6. Step 6: Final answer
    x = 128.69

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.