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Finding the Fourth Proportional to 155,846, 215,067.48 and 88,778

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Solution

The fourth proportional to 155,846, 215,067.48 and 88,778 is: 122,513.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,846 : 215,067.48 = 88,778 : x
  2. Step 2: Convert to fraction form
    155,846/215,067.48 = 88,778/x
  3. Step 3: Cross multiply
    155,846x = 215,067.48 × 88,778
  4. Step 4: Simplify right side
    155,846x = 19,093,260,739.44
  5. Step 5: Solve for x
    x = 19,093,260,739.44/155,846
  6. Step 6: Final answer
    x = 122,513.64

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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.