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Finding the Fourth Proportional to 143,884.89, 198,471.45 and 92,877.97

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Solution

The fourth proportional to 143,884.89, 198,471.45 and 92,877.97 is: 128,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,884.89 : 198,471.45 = 92,877.97 : x
  2. Step 2: Convert to fraction form
    143,884.89/198,471.45 = 92,877.97/x
  3. Step 3: Cross multiply
    143,884.89x = 198,471.45 × 92,877.97
  4. Step 4: Simplify right side
    143,884.89x = 18,433,625,378.96
  5. Step 5: Solve for x
    x = 18,433,625,378.96/143,884.89
  6. Step 6: Final answer
    x = 128,113.70

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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.