Home / 260,022.30-390,033.45-126,987.90

Finding the Fourth Proportional to 260,022.30, 390,033.45 and 126,987.90

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Solution

The fourth proportional to 260,022.30, 390,033.45 and 126,987.90 is: 190,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,022.30 : 390,033.45 = 126,987.90 : x
  2. Step 2: Convert to fraction form
    260,022.30/390,033.45 = 126,987.90/x
  3. Step 3: Cross multiply
    260,022.30x = 390,033.45 × 126,987.90
  4. Step 4: Simplify right side
    260,022.30x = 49,529,528,745.26
  5. Step 5: Solve for x
    x = 49,529,528,745.26/260,022.30
  6. Step 6: Final answer
    x = 190,481.85

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1.5x scale

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.