Home / 153.18-229.74-72

Finding the Fourth Proportional to 153.18, 229.74 and 72

Calculator

Solution

The fourth proportional to 153.18, 229.74 and 72 is: 107.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.18 : 229.74 = 72 : x
  2. Step 2: Convert to fraction form
    153.18/229.74 = 72/x
  3. Step 3: Cross multiply
    153.18x = 229.74 × 72
  4. Step 4: Simplify right side
    153.18x = 16,541.28
  5. Step 5: Solve for x
    x = 16,541.28/153.18
  6. Step 6: Final answer
    x = 107.99

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.