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Finding the Fourth Proportional to 128,954.82, 193,383 and 50,058.84

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Solution

The fourth proportional to 128,954.82, 193,383 and 50,058.84 is: 75,069.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,954.82 : 193,383 = 50,058.84 : x
  2. Step 2: Convert to fraction form
    128,954.82/193,383 = 50,058.84/x
  3. Step 3: Cross multiply
    128,954.82x = 193,383 × 50,058.84
  4. Step 4: Simplify right side
    128,954.82x = 9,680,528,655.72
  5. Step 5: Solve for x
    x = 9,680,528,655.72/128,954.82
  6. Step 6: Final answer
    x = 75,069.15

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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.