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Finding the Fourth Proportional to 192,129.90, 288,194.85 and 133,080.90

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Solution

The fourth proportional to 192,129.90, 288,194.85 and 133,080.90 is: 199,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,129.90 : 288,194.85 = 133,080.90 : x
  2. Step 2: Convert to fraction form
    192,129.90/288,194.85 = 133,080.90/x
  3. Step 3: Cross multiply
    192,129.90x = 288,194.85 × 133,080.90
  4. Step 4: Simplify right side
    192,129.90x = 38,353,230,013.37
  5. Step 5: Solve for x
    x = 38,353,230,013.37/192,129.90
  6. Step 6: Final answer
    x = 199,621.35

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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.