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Finding the Fourth Proportional to 172,923.66, 259,408.14 and 67,728.96

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Solution

The fourth proportional to 172,923.66, 259,408.14 and 67,728.96 is: 101,602.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,923.66 : 259,408.14 = 67,728.96 : x
  2. Step 2: Convert to fraction form
    172,923.66/259,408.14 = 67,728.96/x
  3. Step 3: Cross multiply
    172,923.66x = 259,408.14 × 67,728.96
  4. Step 4: Simplify right side
    172,923.66x = 17,569,443,537.73
  5. Step 5: Solve for x
    x = 17,569,443,537.73/172,923.66
  6. Step 6: Final answer
    x = 101,602.31

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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.