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Finding the Fourth Proportional to 111,063.60, 166,619.70 and 54,930.60

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Solution

The fourth proportional to 111,063.60, 166,619.70 and 54,930.60 is: 82,407.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,063.60 : 166,619.70 = 54,930.60 : x
  2. Step 2: Convert to fraction form
    111,063.60/166,619.70 = 54,930.60/x
  3. Step 3: Cross multiply
    111,063.60x = 166,619.70 × 54,930.60
  4. Step 4: Simplify right side
    111,063.60x = 9,152,520,092.82
  5. Step 5: Solve for x
    x = 9,152,520,092.82/111,063.60
  6. Step 6: Final answer
    x = 82,407.92

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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.