Home / 143,821.61-198,344.92-90,112.53

Finding the Fourth Proportional to 143,821.61, 198,344.92 and 90,112.53

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Solution

The fourth proportional to 143,821.61, 198,344.92 and 90,112.53 is: 124,274.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,821.61 : 198,344.92 = 90,112.53 : x
  2. Step 2: Convert to fraction form
    143,821.61/198,344.92 = 90,112.53/x
  3. Step 3: Cross multiply
    143,821.61x = 198,344.92 × 90,112.53
  4. Step 4: Simplify right side
    143,821.61x = 17,873,362,553.85
  5. Step 5: Solve for x
    x = 17,873,362,553.85/143,821.61
  6. Step 6: Final answer
    x = 124,274.53

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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.