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Finding the Fourth Proportional to 111,230.78, 166,730.12 and 55,035.82

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Solution

The fourth proportional to 111,230.78, 166,730.12 and 55,035.82 is: 82,496.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,230.78 : 166,730.12 = 55,035.82 : x
  2. Step 2: Convert to fraction form
    111,230.78/166,730.12 = 55,035.82/x
  3. Step 3: Cross multiply
    111,230.78x = 166,730.12 × 55,035.82
  4. Step 4: Simplify right side
    111,230.78x = 9,176,127,764.07
  5. Step 5: Solve for x
    x = 9,176,127,764.07/111,230.78
  6. Step 6: Final answer
    x = 82,496.30

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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.