Home / 186,743.60-280,131.20-80,132.21

Finding the Fourth Proportional to 186,743.60, 280,131.20 and 80,132.21

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Solution

The fourth proportional to 186,743.60, 280,131.20 and 80,132.21 is: 120,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,743.60 : 280,131.20 = 80,132.21 : x
  2. Step 2: Convert to fraction form
    186,743.60/280,131.20 = 80,132.21/x
  3. Step 3: Cross multiply
    186,743.60x = 280,131.20 × 80,132.21
  4. Step 4: Simplify right side
    186,743.60x = 22,447,532,145.95
  5. Step 5: Solve for x
    x = 22,447,532,145.95/186,743.60
  6. Step 6: Final answer
    x = 120,205.09

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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.