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Finding the Fourth Proportional to 172,611.63, 258,958.17 and 54,282.96

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Solution

The fourth proportional to 172,611.63, 258,958.17 and 54,282.96 is: 81,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,611.63 : 258,958.17 = 54,282.96 : x
  2. Step 2: Convert to fraction form
    172,611.63/258,958.17 = 54,282.96/x
  3. Step 3: Cross multiply
    172,611.63x = 258,958.17 × 54,282.96
  4. Step 4: Simplify right side
    172,611.63x = 14,057,015,983.78
  5. Step 5: Solve for x
    x = 14,057,015,983.78/172,611.63
  6. Step 6: Final answer
    x = 81,437.25

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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.