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Finding the Fourth Proportional to 132,665.97, 183,069.79 and 75,306.45

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Solution

The fourth proportional to 132,665.97, 183,069.79 and 75,306.45 is: 103,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,665.97 : 183,069.79 = 75,306.45 : x
  2. Step 2: Convert to fraction form
    132,665.97/183,069.79 = 75,306.45/x
  3. Step 3: Cross multiply
    132,665.97x = 183,069.79 × 75,306.45
  4. Step 4: Simplify right side
    132,665.97x = 13,786,335,987.15
  5. Step 5: Solve for x
    x = 13,786,335,987.15/132,665.97
  6. Step 6: Final answer
    x = 103,917.65

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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.