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Finding the Fourth Proportional to 89,399.20, 134,098.80 and 88,016.80

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Solution

The fourth proportional to 89,399.20, 134,098.80 and 88,016.80 is: 132,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,399.20 : 134,098.80 = 88,016.80 : x
  2. Step 2: Convert to fraction form
    89,399.20/134,098.80 = 88,016.80/x
  3. Step 3: Cross multiply
    89,399.20x = 134,098.80 × 88,016.80
  4. Step 4: Simplify right side
    89,399.20x = 11,802,947,259.84
  5. Step 5: Solve for x
    x = 11,802,947,259.84/89,399.20
  6. Step 6: Final answer
    x = 132,025.20

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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.