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Finding the Fourth Proportional to 111,842.58, 154,291.92 and 66,494.85

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Solution

The fourth proportional to 111,842.58, 154,291.92 and 66,494.85 is: 91,732.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,842.58 : 154,291.92 = 66,494.85 : x
  2. Step 2: Convert to fraction form
    111,842.58/154,291.92 = 66,494.85/x
  3. Step 3: Cross multiply
    111,842.58x = 154,291.92 × 66,494.85
  4. Step 4: Simplify right side
    111,842.58x = 10,259,618,076.61
  5. Step 5: Solve for x
    x = 10,259,618,076.61/111,842.58
  6. Step 6: Final answer
    x = 91,732.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.