Home / 80,929,192.80-121,393,789.20-72,426,136.80

Finding the Fourth Proportional to 80,929,192.80, 121,393,789.20 and 72,426,136.80

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Solution

The fourth proportional to 80,929,192.80, 121,393,789.20 and 72,426,136.80 is: 108,639,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,929,192.80 : 121,393,789.20 = 72,426,136.80 : x
  2. Step 2: Convert to fraction form
    80,929,192.80/121,393,789.20 = 72,426,136.80/x
  3. Step 3: Cross multiply
    80,929,192.80x = 121,393,789.20 × 72,426,136.80
  4. Step 4: Simplify right side
    80,929,192.80x = 8,792,083,183,269,562
  5. Step 5: Solve for x
    x = 8,792,083,183,269,562/80,929,192.80
  6. Step 6: Final answer
    x = 108,639,205.20

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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.