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Finding the Fourth Proportional to 100,818.90, 150,896.16 and 89,747.21

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Solution

The fourth proportional to 100,818.90, 150,896.16 and 89,747.21 is: 134,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,818.90 : 150,896.16 = 89,747.21 : x
  2. Step 2: Convert to fraction form
    100,818.90/150,896.16 = 89,747.21/x
  3. Step 3: Cross multiply
    100,818.90x = 150,896.16 × 89,747.21
  4. Step 4: Simplify right side
    100,818.90x = 13,542,509,736.95
  5. Step 5: Solve for x
    x = 13,542,509,736.95/100,818.90
  6. Step 6: Final answer
    x = 134,325.11

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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.