Home / 170,131.20-255,196.80-130,765.20

Finding the Fourth Proportional to 170,131.20, 255,196.80 and 130,765.20

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Solution

The fourth proportional to 170,131.20, 255,196.80 and 130,765.20 is: 196,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,131.20 : 255,196.80 = 130,765.20 : x
  2. Step 2: Convert to fraction form
    170,131.20/255,196.80 = 130,765.20/x
  3. Step 3: Cross multiply
    170,131.20x = 255,196.80 × 130,765.20
  4. Step 4: Simplify right side
    170,131.20x = 33,370,860,591.36
  5. Step 5: Solve for x
    x = 33,370,860,591.36/170,131.20
  6. Step 6: Final answer
    x = 196,147.80

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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.