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Finding the Fourth Proportional to 89,928.80, 134,893.20 and 88,616.60

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Solution

The fourth proportional to 89,928.80, 134,893.20 and 88,616.60 is: 132,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,928.80 : 134,893.20 = 88,616.60 : x
  2. Step 2: Convert to fraction form
    89,928.80/134,893.20 = 88,616.60/x
  3. Step 3: Cross multiply
    89,928.80x = 134,893.20 × 88,616.60
  4. Step 4: Simplify right side
    89,928.80x = 11,953,776,747.12
  5. Step 5: Solve for x
    x = 11,953,776,747.12/89,928.80
  6. Step 6: Final answer
    x = 132,924.90

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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.