Home / 126,790.20-190,078.26-79,939.80

Finding the Fourth Proportional to 126,790.20, 190,078.26 and 79,939.80

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Solution

The fourth proportional to 126,790.20, 190,078.26 and 79,939.80 is: 119,842.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,790.20 : 190,078.26 = 79,939.80 : x
  2. Step 2: Convert to fraction form
    126,790.20/190,078.26 = 79,939.80/x
  3. Step 3: Cross multiply
    126,790.20x = 190,078.26 × 79,939.80
  4. Step 4: Simplify right side
    126,790.20x = 15,194,818,088.75
  5. Step 5: Solve for x
    x = 15,194,818,088.75/126,790.20
  6. Step 6: Final answer
    x = 119,842.21

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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.