Home / 121,287,136.20-181,930,704.30-99,763,775.70

Finding the Fourth Proportional to 121,287,136.20, 181,930,704.30 and 99,763,775.70

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Solution

The fourth proportional to 121,287,136.20, 181,930,704.30 and 99,763,775.70 is: 149,645,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287,136.20 : 181,930,704.30 = 99,763,775.70 : x
  2. Step 2: Convert to fraction form
    121,287,136.20/181,930,704.30 = 99,763,775.70/x
  3. Step 3: Cross multiply
    121,287,136.20x = 181,930,704.30 × 99,763,775.70
  4. Step 4: Simplify right side
    121,287,136.20x = 18,150,093,976,728,228
  5. Step 5: Solve for x
    x = 18,150,093,976,728,228/121,287,136.20
  6. Step 6: Final answer
    x = 149,645,663.55

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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.