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Finding the Fourth Proportional to 268,754.08, 403,116.54 and 81,751

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Solution

The fourth proportional to 268,754.08, 403,116.54 and 81,751 is: 122,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,754.08 : 403,116.54 = 81,751 : x
  2. Step 2: Convert to fraction form
    268,754.08/403,116.54 = 81,751/x
  3. Step 3: Cross multiply
    268,754.08x = 403,116.54 × 81,751
  4. Step 4: Simplify right side
    268,754.08x = 32,955,180,261.54
  5. Step 5: Solve for x
    x = 32,955,180,261.54/268,754.08
  6. Step 6: Final answer
    x = 122,622.06

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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.