Home / 120,673,906.70-181,010,860.05-72,300,965.90

Finding the Fourth Proportional to 120,673,906.70, 181,010,860.05 and 72,300,965.90

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Solution

The fourth proportional to 120,673,906.70, 181,010,860.05 and 72,300,965.90 is: 108,451,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,673,906.70 : 181,010,860.05 = 72,300,965.90 : x
  2. Step 2: Convert to fraction form
    120,673,906.70/181,010,860.05 = 72,300,965.90/x
  3. Step 3: Cross multiply
    120,673,906.70x = 181,010,860.05 × 72,300,965.90
  4. Step 4: Simplify right side
    120,673,906.70x = 13,087,260,020,004,724
  5. Step 5: Solve for x
    x = 13,087,260,020,004,724/120,673,906.70
  6. Step 6: Final answer
    x = 108,451,448.85

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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.