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Finding the Fourth Proportional to 115,326.60, 171,843.48 and 102,750

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Solution

The fourth proportional to 115,326.60, 171,843.48 and 102,750 is: 153,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,326.60 : 171,843.48 = 102,750 : x
  2. Step 2: Convert to fraction form
    115,326.60/171,843.48 = 102,750/x
  3. Step 3: Cross multiply
    115,326.60x = 171,843.48 × 102,750
  4. Step 4: Simplify right side
    115,326.60x = 17,656,917,570
  5. Step 5: Solve for x
    x = 17,656,917,570/115,326.60
  6. Step 6: Final answer
    x = 153,103.60

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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.