Home / 117,128.62-161,630.94-66,138.04

Finding the Fourth Proportional to 117,128.62, 161,630.94 and 66,138.04

Calculator

Solution

The fourth proportional to 117,128.62, 161,630.94 and 66,138.04 is: 91,266.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.62 : 161,630.94 = 66,138.04 : x
  2. Step 2: Convert to fraction form
    117,128.62/161,630.94 = 66,138.04/x
  3. Step 3: Cross multiply
    117,128.62x = 161,630.94 × 66,138.04
  4. Step 4: Simplify right side
    117,128.62x = 10,689,953,574.96
  5. Step 5: Solve for x
    x = 10,689,953,574.96/117,128.62
  6. Step 6: Final answer
    x = 91,266.79

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.