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Finding the Fourth Proportional to 97,819.80, 146,340.90 and 84,816.60

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Solution

The fourth proportional to 97,819.80, 146,340.90 and 84,816.60 is: 126,887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,819.80 : 146,340.90 = 84,816.60 : x
  2. Step 2: Convert to fraction form
    97,819.80/146,340.90 = 84,816.60/x
  3. Step 3: Cross multiply
    97,819.80x = 146,340.90 × 84,816.60
  4. Step 4: Simplify right side
    97,819.80x = 12,412,137,578.94
  5. Step 5: Solve for x
    x = 12,412,137,578.94/97,819.80
  6. Step 6: Final answer
    x = 126,887.78

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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.