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Finding the Fourth Proportional to 136,267.80, 204,401.70 and 121,234.20

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Solution

The fourth proportional to 136,267.80, 204,401.70 and 121,234.20 is: 181,851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,267.80 : 204,401.70 = 121,234.20 : x
  2. Step 2: Convert to fraction form
    136,267.80/204,401.70 = 121,234.20/x
  3. Step 3: Cross multiply
    136,267.80x = 204,401.70 × 121,234.20
  4. Step 4: Simplify right side
    136,267.80x = 24,780,476,578.14
  5. Step 5: Solve for x
    x = 24,780,476,578.14/136,267.80
  6. Step 6: Final answer
    x = 181,851.30

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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.