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Finding the Fourth Proportional to 181,963.89, 251,117.89 and 101,391.48

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Solution

The fourth proportional to 181,963.89, 251,117.89 and 101,391.48 is: 139,924.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,963.89 : 251,117.89 = 101,391.48 : x
  2. Step 2: Convert to fraction form
    181,963.89/251,117.89 = 101,391.48/x
  3. Step 3: Cross multiply
    181,963.89x = 251,117.89 × 101,391.48
  4. Step 4: Simplify right side
    181,963.89x = 25,461,214,268.10
  5. Step 5: Solve for x
    x = 25,461,214,268.10/181,963.89
  6. Step 6: Final answer
    x = 139,924.54

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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.