Home / 172,724.25-258,975.05-72,857.73

Finding the Fourth Proportional to 172,724.25, 258,975.05 and 72,857.73

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Solution

The fourth proportional to 172,724.25, 258,975.05 and 72,857.73 is: 109,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,724.25 : 258,975.05 = 72,857.73 : x
  2. Step 2: Convert to fraction form
    172,724.25/258,975.05 = 72,857.73/x
  3. Step 3: Cross multiply
    172,724.25x = 258,975.05 × 72,857.73
  4. Step 4: Simplify right side
    172,724.25x = 18,868,333,905.35
  5. Step 5: Solve for x
    x = 18,868,333,905.35/172,724.25
  6. Step 6: Final answer
    x = 109,239.63

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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.