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Finding the Fourth Proportional to 100,396.90, 150,299.43 and 87,941.26

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Solution

The fourth proportional to 100,396.90, 150,299.43 and 87,941.26 is: 131,652.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,396.90 : 150,299.43 = 87,941.26 : x
  2. Step 2: Convert to fraction form
    100,396.90/150,299.43 = 87,941.26/x
  3. Step 3: Cross multiply
    100,396.90x = 150,299.43 × 87,941.26
  4. Step 4: Simplify right side
    100,396.90x = 13,217,521,251.48
  5. Step 5: Solve for x
    x = 13,217,521,251.48/100,396.90
  6. Step 6: Final answer
    x = 131,652.68

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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.