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Finding the Fourth Proportional to 171,215.90, 256,884.42 and 76,437.26

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Solution

The fourth proportional to 171,215.90, 256,884.42 and 76,437.26 is: 114,682.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,215.90 : 256,884.42 = 76,437.26 : x
  2. Step 2: Convert to fraction form
    171,215.90/256,884.42 = 76,437.26/x
  3. Step 3: Cross multiply
    171,215.90x = 256,884.42 × 76,437.26
  4. Step 4: Simplify right side
    171,215.90x = 19,635,541,201.49
  5. Step 5: Solve for x
    x = 19,635,541,201.49/171,215.90
  6. Step 6: Final answer
    x = 114,682.93

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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.