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Finding the Fourth Proportional to 169,894.80, 254,842.20 and 120,031.20

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Solution

The fourth proportional to 169,894.80, 254,842.20 and 120,031.20 is: 180,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,894.80 : 254,842.20 = 120,031.20 : x
  2. Step 2: Convert to fraction form
    169,894.80/254,842.20 = 120,031.20/x
  3. Step 3: Cross multiply
    169,894.80x = 254,842.20 × 120,031.20
  4. Step 4: Simplify right side
    169,894.80x = 30,589,015,076.64
  5. Step 5: Solve for x
    x = 30,589,015,076.64/169,894.80
  6. Step 6: Final answer
    x = 180,046.80

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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.