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Finding the Fourth Proportional to 133,087.28, 183,654.06 and 75,721.28

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Solution

The fourth proportional to 133,087.28, 183,654.06 and 75,721.28 is: 104,491.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,087.28 : 183,654.06 = 75,721.28 : x
  2. Step 2: Convert to fraction form
    133,087.28/183,654.06 = 75,721.28/x
  3. Step 3: Cross multiply
    133,087.28x = 183,654.06 × 75,721.28
  4. Step 4: Simplify right side
    133,087.28x = 13,906,520,500.40
  5. Step 5: Solve for x
    x = 13,906,520,500.40/133,087.28
  6. Step 6: Final answer
    x = 104,491.73

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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.