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Finding the Fourth Proportional to 172,386.91, 258,580.37 and 54,067.51

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Solution

The fourth proportional to 172,386.91, 258,580.37 and 54,067.51 is: 81,101.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,386.91 : 258,580.37 = 54,067.51 : x
  2. Step 2: Convert to fraction form
    172,386.91/258,580.37 = 54,067.51/x
  3. Step 3: Cross multiply
    172,386.91x = 258,580.37 × 54,067.51
  4. Step 4: Simplify right side
    172,386.91x = 13,980,796,740.78
  5. Step 5: Solve for x
    x = 13,980,796,740.78/172,386.91
  6. Step 6: Final answer
    x = 81,101.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.