Home / 143,759.43-198,194.45-100,680.93

Finding the Fourth Proportional to 143,759.43, 198,194.45 and 100,680.93

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Solution

The fourth proportional to 143,759.43, 198,194.45 and 100,680.93 is: 138,804.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,759.43 : 198,194.45 = 100,680.93 : x
  2. Step 2: Convert to fraction form
    143,759.43/198,194.45 = 100,680.93/x
  3. Step 3: Cross multiply
    143,759.43x = 198,194.45 × 100,680.93
  4. Step 4: Simplify right side
    143,759.43x = 19,954,401,043.43
  5. Step 5: Solve for x
    x = 19,954,401,043.43/143,759.43
  6. Step 6: Final answer
    x = 138,804.12

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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.