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Finding the Fourth Proportional to 125,229.52, 172,819.74 and 68,644

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Solution

The fourth proportional to 125,229.52, 172,819.74 and 68,644 is: 94,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,229.52 : 172,819.74 = 68,644 : x
  2. Step 2: Convert to fraction form
    125,229.52/172,819.74 = 68,644/x
  3. Step 3: Cross multiply
    125,229.52x = 172,819.74 × 68,644
  4. Step 4: Simplify right side
    125,229.52x = 11,863,038,232.56
  5. Step 5: Solve for x
    x = 11,863,038,232.56/125,229.52
  6. Step 6: Final answer
    x = 94,730.37

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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.