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Finding the Fourth Proportional to 181,857.54, 250,963.68 and 105,391.31

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Solution

The fourth proportional to 181,857.54, 250,963.68 and 105,391.31 is: 145,440.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,857.54 : 250,963.68 = 105,391.31 : x
  2. Step 2: Convert to fraction form
    181,857.54/250,963.68 = 105,391.31/x
  3. Step 3: Cross multiply
    181,857.54x = 250,963.68 × 105,391.31
  4. Step 4: Simplify right side
    181,857.54x = 26,449,389,742.80
  5. Step 5: Solve for x
    x = 26,449,389,742.80/181,857.54
  6. Step 6: Final answer
    x = 145,440.16

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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.