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Finding the Fourth Proportional to 115,288.16, 171,786.16 and 102,711.54

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Solution

The fourth proportional to 115,288.16, 171,786.16 and 102,711.54 is: 153,046.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,288.16 : 171,786.16 = 102,711.54 : x
  2. Step 2: Convert to fraction form
    115,288.16/171,786.16 = 102,711.54/x
  3. Step 3: Cross multiply
    115,288.16x = 171,786.16 × 102,711.54
  4. Step 4: Simplify right side
    115,288.16x = 17,644,420,530.73
  5. Step 5: Solve for x
    x = 17,644,420,530.73/115,288.16
  6. Step 6: Final answer
    x = 153,046.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.