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Finding the Fourth Proportional to 207,161.61, 310,787.91 and 122,998.56

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Solution

The fourth proportional to 207,161.61, 310,787.91 and 122,998.56 is: 184,524.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,161.61 : 310,787.91 = 122,998.56 : x
  2. Step 2: Convert to fraction form
    207,161.61/310,787.91 = 122,998.56/x
  3. Step 3: Cross multiply
    207,161.61x = 310,787.91 × 122,998.56
  4. Step 4: Simplify right side
    207,161.61x = 38,226,465,395.41
  5. Step 5: Solve for x
    x = 38,226,465,395.41/207,161.61
  6. Step 6: Final answer
    x = 184,524.85

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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.