Home / 139,446-192,942.14-121,578.21

Finding the Fourth Proportional to 139,446, 192,942.14 and 121,578.21

Calculator

Solution

The fourth proportional to 139,446, 192,942.14 and 121,578.21 is: 168,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,446 : 192,942.14 = 121,578.21 : x
  2. Step 2: Convert to fraction form
    139,446/192,942.14 = 121,578.21/x
  3. Step 3: Cross multiply
    139,446x = 192,942.14 × 121,578.21
  4. Step 4: Simplify right side
    139,446x = 23,457,559,406.88
  5. Step 5: Solve for x
    x = 23,457,559,406.88/139,446
  6. Step 6: Final answer
    x = 168,219.67

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.