Home / 126,749.43-190,123.62-31,979.83

Finding the Fourth Proportional to 126,749.43, 190,123.62 and 31,979.83

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Solution

The fourth proportional to 126,749.43, 190,123.62 and 31,979.83 is: 47,969.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,749.43 : 190,123.62 = 31,979.83 : x
  2. Step 2: Convert to fraction form
    126,749.43/190,123.62 = 31,979.83/x
  3. Step 3: Cross multiply
    126,749.43x = 190,123.62 × 31,979.83
  4. Step 4: Simplify right side
    126,749.43x = 6,080,121,046.58
  5. Step 5: Solve for x
    x = 6,080,121,046.58/126,749.43
  6. Step 6: Final answer
    x = 47,969.61

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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.