Home / 139,063.40-191,836.85-87,990.06

Finding the Fourth Proportional to 139,063.40, 191,836.85 and 87,990.06

Calculator

Solution

The fourth proportional to 139,063.40, 191,836.85 and 87,990.06 is: 121,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063.40 : 191,836.85 = 87,990.06 : x
  2. Step 2: Convert to fraction form
    139,063.40/191,836.85 = 87,990.06/x
  3. Step 3: Cross multiply
    139,063.40x = 191,836.85 × 87,990.06
  4. Step 4: Simplify right side
    139,063.40x = 16,879,735,501.76
  5. Step 5: Solve for x
    x = 16,879,735,501.76/139,063.40
  6. Step 6: Final answer
    x = 121,381.59

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.