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Finding the Fourth Proportional to 169,469,870.80, 254,228,425.80 and 72,424,807.60

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Solution

The fourth proportional to 169,469,870.80, 254,228,425.80 and 72,424,807.60 is: 108,647,305.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,469,870.80 : 254,228,425.80 = 72,424,807.60 : x
  2. Step 2: Convert to fraction form
    169,469,870.80/254,228,425.80 = 72,424,807.60/x
  3. Step 3: Cross multiply
    169,469,870.80x = 254,228,425.80 × 72,424,807.60
  4. Step 4: Simplify right side
    169,469,870.80x = 18,412,444,825,015,876
  5. Step 5: Solve for x
    x = 18,412,444,825,015,876/169,469,870.80
  6. Step 6: Final answer
    x = 108,647,305.50

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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.