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Finding the Fourth Proportional to 143,920.37, 215,879.01 and 49,149.45

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Solution

The fourth proportional to 143,920.37, 215,879.01 and 49,149.45 is: 73,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,920.37 : 215,879.01 = 49,149.45 : x
  2. Step 2: Convert to fraction form
    143,920.37/215,879.01 = 49,149.45/x
  3. Step 3: Cross multiply
    143,920.37x = 215,879.01 × 49,149.45
  4. Step 4: Simplify right side
    143,920.37x = 10,610,334,608.04
  5. Step 5: Solve for x
    x = 10,610,334,608.04/143,920.37
  6. Step 6: Final answer
    x = 73,723.65

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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.