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Finding the Fourth Proportional to 131,164.80, 196,945.20 and 104,791.20

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Solution

The fourth proportional to 131,164.80, 196,945.20 and 104,791.20 is: 157,344.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,164.80 : 196,945.20 = 104,791.20 : x
  2. Step 2: Convert to fraction form
    131,164.80/196,945.20 = 104,791.20/x
  3. Step 3: Cross multiply
    131,164.80x = 196,945.20 × 104,791.20
  4. Step 4: Simplify right side
    131,164.80x = 20,638,123,842.24
  5. Step 5: Solve for x
    x = 20,638,123,842.24/131,164.80
  6. Step 6: Final answer
    x = 157,344.99

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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.