Home / 143,872.51-198,669.43-90,249.70

Finding the Fourth Proportional to 143,872.51, 198,669.43 and 90,249.70

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Solution

The fourth proportional to 143,872.51, 198,669.43 and 90,249.70 is: 124,623.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,872.51 : 198,669.43 = 90,249.70 : x
  2. Step 2: Convert to fraction form
    143,872.51/198,669.43 = 90,249.70/x
  3. Step 3: Cross multiply
    143,872.51x = 198,669.43 × 90,249.70
  4. Step 4: Simplify right side
    143,872.51x = 17,929,856,456.67
  5. Step 5: Solve for x
    x = 17,929,856,456.67/143,872.51
  6. Step 6: Final answer
    x = 124,623.23

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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.