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Finding the Fourth Proportional to 111,425.01, 166,842.27 and 66,990.64

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Solution

The fourth proportional to 111,425.01, 166,842.27 and 66,990.64 is: 100,308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,425.01 : 166,842.27 = 66,990.64 : x
  2. Step 2: Convert to fraction form
    111,425.01/166,842.27 = 66,990.64/x
  3. Step 3: Cross multiply
    111,425.01x = 166,842.27 × 66,990.64
  4. Step 4: Simplify right side
    111,425.01x = 11,176,870,446.35
  5. Step 5: Solve for x
    x = 11,176,870,446.35/111,425.01
  6. Step 6: Final answer
    x = 100,308.45

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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.