Home / 121,291,719.82-181,885,791.57-70,208,998.54

Finding the Fourth Proportional to 121,291,719.82, 181,885,791.57 and 70,208,998.54

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Solution

The fourth proportional to 121,291,719.82, 181,885,791.57 and 70,208,998.54 is: 105,283,520.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,291,719.82 : 181,885,791.57 = 70,208,998.54 : x
  2. Step 2: Convert to fraction form
    121,291,719.82/181,885,791.57 = 70,208,998.54/x
  3. Step 3: Cross multiply
    121,291,719.82x = 181,885,791.57 × 70,208,998.54
  4. Step 4: Simplify right side
    121,291,719.82x = 12,770,019,274,784,874
  5. Step 5: Solve for x
    x = 12,770,019,274,784,874/121,291,719.82
  6. Step 6: Final answer
    x = 105,283,520.54

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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.