Home / 260,048.39-390,074.20-80,131.59

Finding the Fourth Proportional to 260,048.39, 390,074.20 and 80,131.59

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Solution

The fourth proportional to 260,048.39, 390,074.20 and 80,131.59 is: 120,197.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,048.39 : 390,074.20 = 80,131.59 : x
  2. Step 2: Convert to fraction form
    260,048.39/390,074.20 = 80,131.59/x
  3. Step 3: Cross multiply
    260,048.39x = 390,074.20 × 80,131.59
  4. Step 4: Simplify right side
    260,048.39x = 31,257,265,663.65
  5. Step 5: Solve for x
    x = 31,257,265,663.65/260,048.39
  6. Step 6: Final answer
    x = 120,197.88

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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.