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Finding the Fourth Proportional to 169,469,869.80, 254,228,424.30 and 72,424,806.60

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Solution

The fourth proportional to 169,469,869.80, 254,228,424.30 and 72,424,806.60 is: 108,647,303.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,469,869.80 : 254,228,424.30 = 72,424,806.60 : x
  2. Step 2: Convert to fraction form
    169,469,869.80/254,228,424.30 = 72,424,806.60/x
  3. Step 3: Cross multiply
    169,469,869.80x = 254,228,424.30 × 72,424,806.60
  4. Step 4: Simplify right side
    169,469,869.80x = 18,412,444,462,150,240
  5. Step 5: Solve for x
    x = 18,412,444,462,150,240/169,469,869.80
  6. Step 6: Final answer
    x = 108,647,303.99

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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.