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Finding the Fourth Proportional to 172,559.54, 258,882.24 and 137,154.44

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Solution

The fourth proportional to 172,559.54, 258,882.24 and 137,154.44 is: 205,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,559.54 : 258,882.24 = 137,154.44 : x
  2. Step 2: Convert to fraction form
    172,559.54/258,882.24 = 137,154.44/x
  3. Step 3: Cross multiply
    172,559.54x = 258,882.24 × 137,154.44
  4. Step 4: Simplify right side
    172,559.54x = 35,506,848,653.15
  5. Step 5: Solve for x
    x = 35,506,848,653.15/172,559.54
  6. Step 6: Final answer
    x = 205,765.78

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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.