Home / 260,107.20-390,233.70-126,991.80

Finding the Fourth Proportional to 260,107.20, 390,233.70 and 126,991.80

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Solution

The fourth proportional to 260,107.20, 390,233.70 and 126,991.80 is: 190,523.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,107.20 : 390,233.70 = 126,991.80 : x
  2. Step 2: Convert to fraction form
    260,107.20/390,233.70 = 126,991.80/x
  3. Step 3: Cross multiply
    260,107.20x = 390,233.70 × 126,991.80
  4. Step 4: Simplify right side
    260,107.20x = 49,556,479,983.66
  5. Step 5: Solve for x
    x = 49,556,479,983.66/260,107.20
  6. Step 6: Final answer
    x = 190,523.29

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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.