Home / 143,890.78-198,561.99-80,216.26

Finding the Fourth Proportional to 143,890.78, 198,561.99 and 80,216.26

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Solution

The fourth proportional to 143,890.78, 198,561.99 and 80,216.26 is: 110,694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,890.78 : 198,561.99 = 80,216.26 : x
  2. Step 2: Convert to fraction form
    143,890.78/198,561.99 = 80,216.26/x
  3. Step 3: Cross multiply
    143,890.78x = 198,561.99 × 80,216.26
  4. Step 4: Simplify right side
    143,890.78x = 15,927,900,215.96
  5. Step 5: Solve for x
    x = 15,927,900,215.96/143,890.78
  6. Step 6: Final answer
    x = 110,694.38

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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.