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Finding the Fourth Proportional to 181,778.39, 250,789.24 and 105,255.71

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Solution

The fourth proportional to 181,778.39, 250,789.24 and 105,255.71 is: 145,215.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,778.39 : 250,789.24 = 105,255.71 : x
  2. Step 2: Convert to fraction form
    181,778.39/250,789.24 = 105,255.71/x
  3. Step 3: Cross multiply
    181,778.39x = 250,789.24 × 105,255.71
  4. Step 4: Simplify right side
    181,778.39x = 26,396,999,516.56
  5. Step 5: Solve for x
    x = 26,396,999,516.56/181,778.39
  6. Step 6: Final answer
    x = 145,215.28

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1.5x scale

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.