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Finding the Fourth Proportional to 125,067, 172,593.06 and 71,351.46

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Solution

The fourth proportional to 125,067, 172,593.06 and 71,351.46 is: 98,465.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,067 : 172,593.06 = 71,351.46 : x
  2. Step 2: Convert to fraction form
    125,067/172,593.06 = 71,351.46/x
  3. Step 3: Cross multiply
    125,067x = 172,593.06 × 71,351.46
  4. Step 4: Simplify right side
    125,067x = 12,314,766,816.87
  5. Step 5: Solve for x
    x = 12,314,766,816.87/125,067
  6. Step 6: Final answer
    x = 98,465.36

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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.