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Finding the Fourth Proportional to 143,489.94, 198,013.41 and 79,827.54

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Solution

The fourth proportional to 143,489.94, 198,013.41 and 79,827.54 is: 110,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,489.94 : 198,013.41 = 79,827.54 : x
  2. Step 2: Convert to fraction form
    143,489.94/198,013.41 = 79,827.54/x
  3. Step 3: Cross multiply
    143,489.94x = 198,013.41 × 79,827.54
  4. Step 4: Simplify right side
    143,489.94x = 15,806,923,407.31
  5. Step 5: Solve for x
    x = 15,806,923,407.31/143,489.94
  6. Step 6: Final answer
    x = 110,160.50

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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.