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Finding the Fourth Proportional to 171,138.73, 256,742.33 and 52,805.63

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Solution

The fourth proportional to 171,138.73, 256,742.33 and 52,805.63 is: 79,219.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,138.73 : 256,742.33 = 52,805.63 : x
  2. Step 2: Convert to fraction form
    171,138.73/256,742.33 = 52,805.63/x
  3. Step 3: Cross multiply
    171,138.73x = 256,742.33 × 52,805.63
  4. Step 4: Simplify right side
    171,138.73x = 13,557,438,935.58
  5. Step 5: Solve for x
    x = 13,557,438,935.58/171,138.73
  6. Step 6: Final answer
    x = 79,219.00

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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.