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Finding the Fourth Proportional to 123,893.31, 170,959.06 and 68,701.25

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Solution

The fourth proportional to 123,893.31, 170,959.06 and 68,701.25 is: 94,800.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,893.31 : 170,959.06 = 68,701.25 : x
  2. Step 2: Convert to fraction form
    123,893.31/170,959.06 = 68,701.25/x
  3. Step 3: Cross multiply
    123,893.31x = 170,959.06 × 68,701.25
  4. Step 4: Simplify right side
    123,893.31x = 11,745,101,025.21
  5. Step 5: Solve for x
    x = 11,745,101,025.21/123,893.31
  6. Step 6: Final answer
    x = 94,800.12

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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.