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Finding the Fourth Proportional to 181,958.63, 251,104.59 and 100,289.78

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Solution

The fourth proportional to 181,958.63, 251,104.59 and 100,289.78 is: 138,400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,958.63 : 251,104.59 = 100,289.78 : x
  2. Step 2: Convert to fraction form
    181,958.63/251,104.59 = 100,289.78/x
  3. Step 3: Cross multiply
    181,958.63x = 251,104.59 × 100,289.78
  4. Step 4: Simplify right side
    181,958.63x = 25,183,224,088.09
  5. Step 5: Solve for x
    x = 25,183,224,088.09/181,958.63
  6. Step 6: Final answer
    x = 138,400.82

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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.