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Finding the Fourth Proportional to 144,034.89, 198,768.36 and 80,372.87

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Solution

The fourth proportional to 144,034.89, 198,768.36 and 80,372.87 is: 110,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,034.89 : 198,768.36 = 80,372.87 : x
  2. Step 2: Convert to fraction form
    144,034.89/198,768.36 = 80,372.87/x
  3. Step 3: Cross multiply
    144,034.89x = 198,768.36 × 80,372.87
  4. Step 4: Simplify right side
    144,034.89x = 15,975,583,558.39
  5. Step 5: Solve for x
    x = 15,975,583,558.39/144,034.89
  6. Step 6: Final answer
    x = 110,914.68

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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.