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Finding the Fourth Proportional to 172,495.19, 258,753.17 and 54,166.54

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Solution

The fourth proportional to 172,495.19, 258,753.17 and 54,166.54 is: 81,253.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,495.19 : 258,753.17 = 54,166.54 : x
  2. Step 2: Convert to fraction form
    172,495.19/258,753.17 = 54,166.54/x
  3. Step 3: Cross multiply
    172,495.19x = 258,753.17 × 54,166.54
  4. Step 4: Simplify right side
    172,495.19x = 14,015,763,932.93
  5. Step 5: Solve for x
    x = 14,015,763,932.93/172,495.19
  6. Step 6: Final answer
    x = 81,253.07

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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.