Home / 143,839.68-198,494.19-90,153.69

Finding the Fourth Proportional to 143,839.68, 198,494.19 and 90,153.69

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Solution

The fourth proportional to 143,839.68, 198,494.19 and 90,153.69 is: 124,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,839.68 : 198,494.19 = 90,153.69 : x
  2. Step 2: Convert to fraction form
    143,839.68/198,494.19 = 90,153.69/x
  3. Step 3: Cross multiply
    143,839.68x = 198,494.19 × 90,153.69
  4. Step 4: Simplify right side
    143,839.68x = 17,894,983,672.06
  5. Step 5: Solve for x
    x = 17,894,983,672.06/143,839.68
  6. Step 6: Final answer
    x = 124,409.23

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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.