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Finding the Fourth Proportional to 89,199.96, 133,824.54 and 72,518.52

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Solution

The fourth proportional to 89,199.96, 133,824.54 and 72,518.52 is: 108,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,199.96 : 133,824.54 = 72,518.52 : x
  2. Step 2: Convert to fraction form
    89,199.96/133,824.54 = 72,518.52/x
  3. Step 3: Cross multiply
    89,199.96x = 133,824.54 × 72,518.52
  4. Step 4: Simplify right side
    89,199.96x = 9,704,757,580.48
  5. Step 5: Solve for x
    x = 9,704,757,580.48/89,199.96
  6. Step 6: Final answer
    x = 108,797.78

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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.