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Finding the Fourth Proportional to 250,069.83, 374,916.09 and 81,489.49

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Solution

The fourth proportional to 250,069.83, 374,916.09 and 81,489.49 is: 122,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,069.83 : 374,916.09 = 81,489.49 : x
  2. Step 2: Convert to fraction form
    250,069.83/374,916.09 = 81,489.49/x
  3. Step 3: Cross multiply
    250,069.83x = 374,916.09 × 81,489.49
  4. Step 4: Simplify right side
    250,069.83x = 30,551,722,444.09
  5. Step 5: Solve for x
    x = 30,551,722,444.09/250,069.83
  6. Step 6: Final answer
    x = 122,172.76

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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.