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Finding the Fourth Proportional to 125,310.64, 172,928.91 and 68,722.42

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Solution

The fourth proportional to 125,310.64, 172,928.91 and 68,722.42 is: 94,837.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,310.64 : 172,928.91 = 68,722.42 : x
  2. Step 2: Convert to fraction form
    125,310.64/172,928.91 = 68,722.42/x
  3. Step 3: Cross multiply
    125,310.64x = 172,928.91 × 68,722.42
  4. Step 4: Simplify right side
    125,310.64x = 11,884,093,183.16
  5. Step 5: Solve for x
    x = 11,884,093,183.16/125,310.64
  6. Step 6: Final answer
    x = 94,837.06

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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.