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Finding the Fourth Proportional to 104,879.70, 144,736.20 and 57,132.93

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Solution

The fourth proportional to 104,879.70, 144,736.20 and 57,132.93 is: 78,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,879.70 : 144,736.20 = 57,132.93 : x
  2. Step 2: Convert to fraction form
    104,879.70/144,736.20 = 57,132.93/x
  3. Step 3: Cross multiply
    104,879.70x = 144,736.20 × 57,132.93
  4. Step 4: Simplify right side
    104,879.70x = 8,269,203,183.07
  5. Step 5: Solve for x
    x = 8,269,203,183.07/104,879.70
  6. Step 6: Final answer
    x = 78,844.65

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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.