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Finding the Fourth Proportional to 116,859.60, 161,299.28 and 69,129.54

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Solution

The fourth proportional to 116,859.60, 161,299.28 and 69,129.54 is: 95,418.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,859.60 : 161,299.28 = 69,129.54 : x
  2. Step 2: Convert to fraction form
    116,859.60/161,299.28 = 69,129.54/x
  3. Step 3: Cross multiply
    116,859.60x = 161,299.28 × 69,129.54
  4. Step 4: Simplify right side
    116,859.60x = 11,150,545,028.73
  5. Step 5: Solve for x
    x = 11,150,545,028.73/116,859.60
  6. Step 6: Final answer
    x = 95,418.31

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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.