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Finding the Fourth Proportional to 89,230.40, 133,845.60 and 68,235.20

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Solution

The fourth proportional to 89,230.40, 133,845.60 and 68,235.20 is: 102,352.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,230.40 : 133,845.60 = 68,235.20 : x
  2. Step 2: Convert to fraction form
    89,230.40/133,845.60 = 68,235.20/x
  3. Step 3: Cross multiply
    89,230.40x = 133,845.60 × 68,235.20
  4. Step 4: Simplify right side
    89,230.40x = 9,132,981,285.12
  5. Step 5: Solve for x
    x = 9,132,981,285.12/89,230.40
  6. Step 6: Final answer
    x = 102,352.80

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1.5x scale

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.