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Finding the Fourth Proportional to 251,081.51, 376,633.65 and 71,179.82

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Solution

The fourth proportional to 251,081.51, 376,633.65 and 71,179.82 is: 106,772.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,081.51 : 376,633.65 = 71,179.82 : x
  2. Step 2: Convert to fraction form
    251,081.51/376,633.65 = 71,179.82/x
  3. Step 3: Cross multiply
    251,081.51x = 376,633.65 × 71,179.82
  4. Step 4: Simplify right side
    251,081.51x = 26,808,715,412.94
  5. Step 5: Solve for x
    x = 26,808,715,412.94/251,081.51
  6. Step 6: Final answer
    x = 106,772.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.