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Finding the Fourth Proportional to 181,287.24, 250,176.78 and 100,719.78

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Solution

The fourth proportional to 181,287.24, 250,176.78 and 100,719.78 is: 138,993.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,287.24 : 250,176.78 = 100,719.78 : x
  2. Step 2: Convert to fraction form
    181,287.24/250,176.78 = 100,719.78/x
  3. Step 3: Cross multiply
    181,287.24x = 250,176.78 × 100,719.78
  4. Step 4: Simplify right side
    181,287.24x = 25,197,750,242.71
  5. Step 5: Solve for x
    x = 25,197,750,242.71/181,287.24
  6. Step 6: Final answer
    x = 138,993.51

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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.