Home / 126,380.66-189,477.43-76,448.61

Finding the Fourth Proportional to 126,380.66, 189,477.43 and 76,448.61

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Solution

The fourth proportional to 126,380.66, 189,477.43 and 76,448.61 is: 114,616.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,380.66 : 189,477.43 = 76,448.61 : x
  2. Step 2: Convert to fraction form
    126,380.66/189,477.43 = 76,448.61/x
  3. Step 3: Cross multiply
    126,380.66x = 189,477.43 × 76,448.61
  4. Step 4: Simplify right side
    126,380.66x = 14,485,285,958.75
  5. Step 5: Solve for x
    x = 14,485,285,958.75/126,380.66
  6. Step 6: Final answer
    x = 114,616.32

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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.