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Finding the Fourth Proportional to 125,171.39, 172,735.80 and 67,811.83

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Solution

The fourth proportional to 125,171.39, 172,735.80 and 67,811.83 is: 93,579.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,171.39 : 172,735.80 = 67,811.83 : x
  2. Step 2: Convert to fraction form
    125,171.39/172,735.80 = 67,811.83/x
  3. Step 3: Cross multiply
    125,171.39x = 172,735.80 × 67,811.83
  4. Step 4: Simplify right side
    125,171.39x = 11,713,530,399.82
  5. Step 5: Solve for x
    x = 11,713,530,399.82/125,171.39
  6. Step 6: Final answer
    x = 93,579.94

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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.