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Finding the Fourth Proportional to 133,324.31, 183,987.88 and 72,898.85

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Solution

The fourth proportional to 133,324.31, 183,987.88 and 72,898.85 is: 100,600.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,324.31 : 183,987.88 = 72,898.85 : x
  2. Step 2: Convert to fraction form
    133,324.31/183,987.88 = 72,898.85/x
  3. Step 3: Cross multiply
    133,324.31x = 183,987.88 × 72,898.85
  4. Step 4: Simplify right side
    133,324.31x = 13,412,504,865.94
  5. Step 5: Solve for x
    x = 13,412,504,865.94/133,324.31
  6. Step 6: Final answer
    x = 100,600.59

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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.