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Finding the Fourth Proportional to 172,676.78, 238,311.02 and 101,052.53

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Solution

The fourth proportional to 172,676.78, 238,311.02 and 101,052.53 is: 139,462.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,676.78 : 238,311.02 = 101,052.53 : x
  2. Step 2: Convert to fraction form
    172,676.78/238,311.02 = 101,052.53/x
  3. Step 3: Cross multiply
    172,676.78x = 238,311.02 × 101,052.53
  4. Step 4: Simplify right side
    172,676.78x = 24,081,930,992.62
  5. Step 5: Solve for x
    x = 24,081,930,992.62/172,676.78
  6. Step 6: Final answer
    x = 139,462.47

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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.