Home / 100,131.19-138,181.04-55,419.19

Finding the Fourth Proportional to 100,131.19, 138,181.04 and 55,419.19

Calculator

Solution

The fourth proportional to 100,131.19, 138,181.04 and 55,419.19 is: 76,478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,131.19 : 138,181.04 = 55,419.19 : x
  2. Step 2: Convert to fraction form
    100,131.19/138,181.04 = 55,419.19/x
  3. Step 3: Cross multiply
    100,131.19x = 138,181.04 × 55,419.19
  4. Step 4: Simplify right side
    100,131.19x = 7,657,880,895.43
  5. Step 5: Solve for x
    x = 7,657,880,895.43/100,131.19
  6. Step 6: Final answer
    x = 76,478.48

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.