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Finding the Fourth Proportional to 143,489.61, 198,023.54 and 79,826.04

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Solution

The fourth proportional to 143,489.61, 198,023.54 and 79,826.04 is: 110,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,489.61 : 198,023.54 = 79,826.04 : x
  2. Step 2: Convert to fraction form
    143,489.61/198,023.54 = 79,826.04/x
  3. Step 3: Cross multiply
    143,489.61x = 198,023.54 × 79,826.04
  4. Step 4: Simplify right side
    143,489.61x = 15,807,434,625.85
  5. Step 5: Solve for x
    x = 15,807,434,625.85/143,489.61
  6. Step 6: Final answer
    x = 110,164.32

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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.