Home / 78,157.12-117,234.66-18,992.62

Finding the Fourth Proportional to 78,157.12, 117,234.66 and 18,992.62

Calculator

Solution

The fourth proportional to 78,157.12, 117,234.66 and 18,992.62 is: 28,488.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157.12 : 117,234.66 = 18,992.62 : x
  2. Step 2: Convert to fraction form
    78,157.12/117,234.66 = 18,992.62/x
  3. Step 3: Cross multiply
    78,157.12x = 117,234.66 × 18,992.62
  4. Step 4: Simplify right side
    78,157.12x = 2,226,593,348.21
  5. Step 5: Solve for x
    x = 2,226,593,348.21/78,157.12
  6. Step 6: Final answer
    x = 28,488.68

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.