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Finding the Fourth Proportional to 97,793.80, 146,229.90 and 72,910.60

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Solution

The fourth proportional to 97,793.80, 146,229.90 and 72,910.60 is: 109,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,793.80 : 146,229.90 = 72,910.60 : x
  2. Step 2: Convert to fraction form
    97,793.80/146,229.90 = 72,910.60/x
  3. Step 3: Cross multiply
    97,793.80x = 146,229.90 × 72,910.60
  4. Step 4: Simplify right side
    97,793.80x = 10,661,709,746.94
  5. Step 5: Solve for x
    x = 10,661,709,746.94/97,793.80
  6. Step 6: Final answer
    x = 109,022.35

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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.