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Finding the Fourth Proportional to 137,446.56, 206,249.12 and 74,266.84

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Solution

The fourth proportional to 137,446.56, 206,249.12 and 74,266.84 is: 111,443.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,446.56 : 206,249.12 = 74,266.84 : x
  2. Step 2: Convert to fraction form
    137,446.56/206,249.12 = 74,266.84/x
  3. Step 3: Cross multiply
    137,446.56x = 206,249.12 × 74,266.84
  4. Step 4: Simplify right side
    137,446.56x = 15,317,470,395.18
  5. Step 5: Solve for x
    x = 15,317,470,395.18/137,446.56
  6. Step 6: Final answer
    x = 111,443.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.