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Finding the Fourth Proportional to 169,469,874.80, 254,228,431.80 and 72,424,811.60

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Solution

The fourth proportional to 169,469,874.80, 254,228,431.80 and 72,424,811.60 is: 108,647,311.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,469,874.80 : 254,228,431.80 = 72,424,811.60 : x
  2. Step 2: Convert to fraction form
    169,469,874.80/254,228,431.80 = 72,424,811.60/x
  3. Step 3: Cross multiply
    169,469,874.80x = 254,228,431.80 × 72,424,811.60
  4. Step 4: Simplify right side
    169,469,874.80x = 18,412,446,276,478,448
  5. Step 5: Solve for x
    x = 18,412,446,276,478,448/169,469,874.80
  6. Step 6: Final answer
    x = 108,647,311.50

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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.