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Finding the Fourth Proportional to 151,963.70, 209,659.49 and 91,511.37

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Solution

The fourth proportional to 151,963.70, 209,659.49 and 91,511.37 is: 126,255.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,963.70 : 209,659.49 = 91,511.37 : x
  2. Step 2: Convert to fraction form
    151,963.70/209,659.49 = 91,511.37/x
  3. Step 3: Cross multiply
    151,963.70x = 209,659.49 × 91,511.37
  4. Step 4: Simplify right side
    151,963.70x = 19,186,227,049.01
  5. Step 5: Solve for x
    x = 19,186,227,049.01/151,963.70
  6. Step 6: Final answer
    x = 126,255.33

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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.