Home / 217,664.91-300,361.09-122,153.15

Finding the Fourth Proportional to 217,664.91, 300,361.09 and 122,153.15

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Solution

The fourth proportional to 217,664.91, 300,361.09 and 122,153.15 is: 168,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,664.91 : 300,361.09 = 122,153.15 : x
  2. Step 2: Convert to fraction form
    217,664.91/300,361.09 = 122,153.15/x
  3. Step 3: Cross multiply
    217,664.91x = 300,361.09 × 122,153.15
  4. Step 4: Simplify right side
    217,664.91x = 36,690,053,280.93
  5. Step 5: Solve for x
    x = 36,690,053,280.93/217,664.91
  6. Step 6: Final answer
    x = 168,562.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.