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Finding the Fourth Proportional to 192,138.30, 288,034.65 and 125,610.30

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Solution

The fourth proportional to 192,138.30, 288,034.65 and 125,610.30 is: 188,302.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,138.30 : 288,034.65 = 125,610.30 : x
  2. Step 2: Convert to fraction form
    192,138.30/288,034.65 = 125,610.30/x
  3. Step 3: Cross multiply
    192,138.30x = 288,034.65 × 125,610.30
  4. Step 4: Simplify right side
    192,138.30x = 36,180,118,796.90
  5. Step 5: Solve for x
    x = 36,180,118,796.90/192,138.30
  6. Step 6: Final answer
    x = 188,302.48

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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.