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Finding the Fourth Proportional to 192,801.30, 289,080.45 and 80,559.60

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Solution

The fourth proportional to 192,801.30, 289,080.45 and 80,559.60 is: 120,788.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,801.30 : 289,080.45 = 80,559.60 : x
  2. Step 2: Convert to fraction form
    192,801.30/289,080.45 = 80,559.60/x
  3. Step 3: Cross multiply
    192,801.30x = 289,080.45 × 80,559.60
  4. Step 4: Simplify right side
    192,801.30x = 23,288,205,419.82
  5. Step 5: Solve for x
    x = 23,288,205,419.82/192,801.30
  6. Step 6: Final answer
    x = 120,788.63

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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.