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Finding the Fourth Proportional to 111,186, 166,569.72 and 54,960.28

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Solution

The fourth proportional to 111,186, 166,569.72 and 54,960.28 is: 82,336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,186 : 166,569.72 = 54,960.28 : x
  2. Step 2: Convert to fraction form
    111,186/166,569.72 = 54,960.28/x
  3. Step 3: Cross multiply
    111,186x = 166,569.72 × 54,960.28
  4. Step 4: Simplify right side
    111,186x = 9,154,718,450.72
  5. Step 5: Solve for x
    x = 9,154,718,450.72/111,186
  6. Step 6: Final answer
    x = 82,336.97

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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.