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Finding the Fourth Proportional to 151,247.60, 208,728.60 and 84,183.92

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Solution

The fourth proportional to 151,247.60, 208,728.60 and 84,183.92 is: 116,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,247.60 : 208,728.60 = 84,183.92 : x
  2. Step 2: Convert to fraction form
    151,247.60/208,728.60 = 84,183.92/x
  3. Step 3: Cross multiply
    151,247.60x = 208,728.60 × 84,183.92
  4. Step 4: Simplify right side
    151,247.60x = 17,571,591,764.11
  5. Step 5: Solve for x
    x = 17,571,591,764.11/151,247.60
  6. Step 6: Final answer
    x = 116,177.66

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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.