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Finding the Fourth Proportional to 159,371.24, 219,914.03 and 91,369.50

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Solution

The fourth proportional to 159,371.24, 219,914.03 and 91,369.50 is: 126,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,371.24 : 219,914.03 = 91,369.50 : x
  2. Step 2: Convert to fraction form
    159,371.24/219,914.03 = 91,369.50/x
  3. Step 3: Cross multiply
    159,371.24x = 219,914.03 × 91,369.50
  4. Step 4: Simplify right side
    159,371.24x = 20,093,434,507.24
  5. Step 5: Solve for x
    x = 20,093,434,507.24/159,371.24
  6. Step 6: Final answer
    x = 126,079.43

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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.