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Finding the Fourth Proportional to 125,081.92, 172,611.39 and 68,493.34

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Solution

The fourth proportional to 125,081.92, 172,611.39 and 68,493.34 is: 94,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,081.92 : 172,611.39 = 68,493.34 : x
  2. Step 2: Convert to fraction form
    125,081.92/172,611.39 = 68,493.34/x
  3. Step 3: Cross multiply
    125,081.92x = 172,611.39 × 68,493.34
  4. Step 4: Simplify right side
    125,081.92x = 11,822,730,623.14
  5. Step 5: Solve for x
    x = 11,822,730,623.14/125,081.92
  6. Step 6: Final answer
    x = 94,519.90

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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.