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Finding the Fourth Proportional to 100,381.82, 150,371.97 and 60,378.71

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Solution

The fourth proportional to 100,381.82, 150,371.97 and 60,378.71 is: 90,447.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,381.82 : 150,371.97 = 60,378.71 : x
  2. Step 2: Convert to fraction form
    100,381.82/150,371.97 = 60,378.71/x
  3. Step 3: Cross multiply
    100,381.82x = 150,371.97 × 60,378.71
  4. Step 4: Simplify right side
    100,381.82x = 9,079,264,816.90
  5. Step 5: Solve for x
    x = 9,079,264,816.90/100,381.82
  6. Step 6: Final answer
    x = 90,447.31

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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.