Home / 87,974.40-131,875.20-78,643.20

Finding the Fourth Proportional to 87,974.40, 131,875.20 and 78,643.20

Calculator

Solution

The fourth proportional to 87,974.40, 131,875.20 and 78,643.20 is: 117,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.40 : 131,875.20 = 78,643.20 : x
  2. Step 2: Convert to fraction form
    87,974.40/131,875.20 = 78,643.20/x
  3. Step 3: Cross multiply
    87,974.40x = 131,875.20 × 78,643.20
  4. Step 4: Simplify right side
    87,974.40x = 10,371,087,728.64
  5. Step 5: Solve for x
    x = 10,371,087,728.64/87,974.40
  6. Step 6: Final answer
    x = 117,887.56

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.