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Finding the Fourth Proportional to 89,197.20, 133,795.80 and 87,814.80

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Solution

The fourth proportional to 89,197.20, 133,795.80 and 87,814.80 is: 131,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,197.20 : 133,795.80 = 87,814.80 : x
  2. Step 2: Convert to fraction form
    89,197.20/133,795.80 = 87,814.80/x
  3. Step 3: Cross multiply
    89,197.20x = 133,795.80 × 87,814.80
  4. Step 4: Simplify right side
    89,197.20x = 11,749,251,417.84
  5. Step 5: Solve for x
    x = 11,749,251,417.84/89,197.20
  6. Step 6: Final answer
    x = 131,722.20

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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.