Home / 137.76-190.02-100.92

Finding the Fourth Proportional to 137.76, 190.02 and 100.92

Calculator

Solution

The fourth proportional to 137.76, 190.02 and 100.92 is: 139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.76 : 190.02 = 100.92 : x
  2. Step 2: Convert to fraction form
    137.76/190.02 = 100.92/x
  3. Step 3: Cross multiply
    137.76x = 190.02 × 100.92
  4. Step 4: Simplify right side
    137.76x = 19,176.82
  5. Step 5: Solve for x
    x = 19,176.82/137.76
  6. Step 6: Final answer
    x = 139.20

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.