Home / 100,026.08-138,086.16-77,313.78

Finding the Fourth Proportional to 100,026.08, 138,086.16 and 77,313.78

Calculator

Solution

The fourth proportional to 100,026.08, 138,086.16 and 77,313.78 is: 106,731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,026.08 : 138,086.16 = 77,313.78 : x
  2. Step 2: Convert to fraction form
    100,026.08/138,086.16 = 77,313.78/x
  3. Step 3: Cross multiply
    100,026.08x = 138,086.16 × 77,313.78
  4. Step 4: Simplify right side
    100,026.08x = 10,675,962,995.28
  5. Step 5: Solve for x
    x = 10,675,962,995.28/100,026.08
  6. Step 6: Final answer
    x = 106,731.79

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.