Home / 231,113.16-318,932.28-129,140.28

Finding the Fourth Proportional to 231,113.16, 318,932.28 and 129,140.28

Calculator

Solution

The fourth proportional to 231,113.16, 318,932.28 and 129,140.28 is: 178,211.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,113.16 : 318,932.28 = 129,140.28 : x
  2. Step 2: Convert to fraction form
    231,113.16/318,932.28 = 129,140.28/x
  3. Step 3: Cross multiply
    231,113.16x = 318,932.28 × 129,140.28
  4. Step 4: Simplify right side
    231,113.16x = 41,187,003,940.24
  5. Step 5: Solve for x
    x = 41,187,003,940.24/231,113.16
  6. Step 6: Final answer
    x = 178,211.42

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.