Home / 152.86-210.86-87.35

Finding the Fourth Proportional to 152.86, 210.86 and 87.35

Calculator

Solution

The fourth proportional to 152.86, 210.86 and 87.35 is: 120.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.86 : 210.86 = 87.35 : x
  2. Step 2: Convert to fraction form
    152.86/210.86 = 87.35/x
  3. Step 3: Cross multiply
    152.86x = 210.86 × 87.35
  4. Step 4: Simplify right side
    152.86x = 18,418.62
  5. Step 5: Solve for x
    x = 18,418.62/152.86
  6. Step 6: Final answer
    x = 120.49

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.