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Finding the Fourth Proportional to 144,098.89, 198,848.22 and 80,440.72

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Solution

The fourth proportional to 144,098.89, 198,848.22 and 80,440.72 is: 111,003.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,098.89 : 198,848.22 = 80,440.72 : x
  2. Step 2: Convert to fraction form
    144,098.89/198,848.22 = 80,440.72/x
  3. Step 3: Cross multiply
    144,098.89x = 198,848.22 × 80,440.72
  4. Step 4: Simplify right side
    144,098.89x = 15,995,493,188.75
  5. Step 5: Solve for x
    x = 15,995,493,188.75/144,098.89
  6. Step 6: Final answer
    x = 111,003.59

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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.