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Finding the Fourth Proportional to 117,355.75, 161,951.01 and 63,640.75

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Solution

The fourth proportional to 117,355.75, 161,951.01 and 63,640.75 is: 87,824.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,355.75 : 161,951.01 = 63,640.75 : x
  2. Step 2: Convert to fraction form
    117,355.75/161,951.01 = 63,640.75/x
  3. Step 3: Cross multiply
    117,355.75x = 161,951.01 × 63,640.75
  4. Step 4: Simplify right side
    117,355.75x = 10,306,682,929.90
  5. Step 5: Solve for x
    x = 10,306,682,929.90/117,355.75
  6. Step 6: Final answer
    x = 87,824.27

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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.