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Finding the Fourth Proportional to 133,342.20, 199,940.40 and 54,367.20

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Solution

The fourth proportional to 133,342.20, 199,940.40 and 54,367.20 is: 81,521.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,342.20 : 199,940.40 = 54,367.20 : x
  2. Step 2: Convert to fraction form
    133,342.20/199,940.40 = 54,367.20/x
  3. Step 3: Cross multiply
    133,342.20x = 199,940.40 × 54,367.20
  4. Step 4: Simplify right side
    133,342.20x = 10,870,199,714.88
  5. Step 5: Solve for x
    x = 10,870,199,714.88/133,342.20
  6. Step 6: Final answer
    x = 81,521.08

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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.