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Finding the Fourth Proportional to 123,894.63, 170,960.87 and 68,702.56

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Solution

The fourth proportional to 123,894.63, 170,960.87 and 68,702.56 is: 94,801.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,894.63 : 170,960.87 = 68,702.56 : x
  2. Step 2: Convert to fraction form
    123,894.63/170,960.87 = 68,702.56/x
  3. Step 3: Cross multiply
    123,894.63x = 170,960.87 × 68,702.56
  4. Step 4: Simplify right side
    123,894.63x = 11,745,449,428.83
  5. Step 5: Solve for x
    x = 11,745,449,428.83/123,894.63
  6. Step 6: Final answer
    x = 94,801.93

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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.