Home / 126,550.75-189,732.18-76,618.96

Finding the Fourth Proportional to 126,550.75, 189,732.18 and 76,618.96

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Solution

The fourth proportional to 126,550.75, 189,732.18 and 76,618.96 is: 114,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,550.75 : 189,732.18 = 76,618.96 : x
  2. Step 2: Convert to fraction form
    126,550.75/189,732.18 = 76,618.96/x
  3. Step 3: Cross multiply
    126,550.75x = 189,732.18 × 76,618.96
  4. Step 4: Simplify right side
    126,550.75x = 14,537,081,835.80
  5. Step 5: Solve for x
    x = 14,537,081,835.80/126,550.75
  6. Step 6: Final answer
    x = 114,871.56

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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.