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Finding the Fourth Proportional to 100,396.88, 150,299.40 and 87,941.24

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Solution

The fourth proportional to 100,396.88, 150,299.40 and 87,941.24 is: 131,652.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,396.88 : 150,299.40 = 87,941.24 : x
  2. Step 2: Convert to fraction form
    100,396.88/150,299.40 = 87,941.24/x
  3. Step 3: Cross multiply
    100,396.88x = 150,299.40 × 87,941.24
  4. Step 4: Simplify right side
    100,396.88x = 13,217,515,607.26
  5. Step 5: Solve for x
    x = 13,217,515,607.26/100,396.88
  6. Step 6: Final answer
    x = 131,652.65

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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.