Home / 126,107.12-188,826.96-76,120.40

Finding the Fourth Proportional to 126,107.12, 188,826.96 and 76,120.40

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Solution

The fourth proportional to 126,107.12, 188,826.96 and 76,120.40 is: 113,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,107.12 : 188,826.96 = 76,120.40 : x
  2. Step 2: Convert to fraction form
    126,107.12/188,826.96 = 76,120.40/x
  3. Step 3: Cross multiply
    126,107.12x = 188,826.96 × 76,120.40
  4. Step 4: Simplify right side
    126,107.12x = 14,373,583,725.98
  5. Step 5: Solve for x
    x = 14,373,583,725.98/126,107.12
  6. Step 6: Final answer
    x = 113,979.16

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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.