Home / 143,485,971.78-198,010,155.48-80,762,034.18

Finding the Fourth Proportional to 143,485,971.78, 198,010,155.48 and 80,762,034.18

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Solution

The fourth proportional to 143,485,971.78, 198,010,155.48 and 80,762,034.18 is: 111,451,333.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,485,971.78 : 198,010,155.48 = 80,762,034.18 : x
  2. Step 2: Convert to fraction form
    143,485,971.78/198,010,155.48 = 80,762,034.18/x
  3. Step 3: Cross multiply
    143,485,971.78x = 198,010,155.48 × 80,762,034.18
  4. Step 4: Simplify right side
    143,485,971.78x = 15,991,702,944,862,874
  5. Step 5: Solve for x
    x = 15,991,702,944,862,874/143,485,971.78
  6. Step 6: Final answer
    x = 111,451,333.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.