Home / 126,619.96-174,789.36-78,896.89

Finding the Fourth Proportional to 126,619.96, 174,789.36 and 78,896.89

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Solution

The fourth proportional to 126,619.96, 174,789.36 and 78,896.89 is: 108,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,619.96 : 174,789.36 = 78,896.89 : x
  2. Step 2: Convert to fraction form
    126,619.96/174,789.36 = 78,896.89/x
  3. Step 3: Cross multiply
    126,619.96x = 174,789.36 × 78,896.89
  4. Step 4: Simplify right side
    126,619.96x = 13,790,336,909.09
  5. Step 5: Solve for x
    x = 13,790,336,909.09/126,619.96
  6. Step 6: Final answer
    x = 108,911.24

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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.