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Finding the Fourth Proportional to 100,371.87, 150,543.92 and 55,476.18

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Solution

The fourth proportional to 100,371.87, 150,543.92 and 55,476.18 is: 83,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,371.87 : 150,543.92 = 55,476.18 : x
  2. Step 2: Convert to fraction form
    100,371.87/150,543.92 = 55,476.18/x
  3. Step 3: Cross multiply
    100,371.87x = 150,543.92 × 55,476.18
  4. Step 4: Simplify right side
    100,371.87x = 8,351,601,326.44
  5. Step 5: Solve for x
    x = 8,351,601,326.44/100,371.87
  6. Step 6: Final answer
    x = 83,206.59

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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.