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Finding the Fourth Proportional to 189,668.76, 261,748.20 and 104,791.32

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Solution

The fourth proportional to 189,668.76, 261,748.20 and 104,791.32 is: 144,614.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,668.76 : 261,748.20 = 104,791.32 : x
  2. Step 2: Convert to fraction form
    189,668.76/261,748.20 = 104,791.32/x
  3. Step 3: Cross multiply
    189,668.76x = 261,748.20 × 104,791.32
  4. Step 4: Simplify right side
    189,668.76x = 27,428,939,385.62
  5. Step 5: Solve for x
    x = 27,428,939,385.62/189,668.76
  6. Step 6: Final answer
    x = 144,614.96

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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.