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Finding the Fourth Proportional to 112,763, 155,612.94 and 68,051

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Solution

The fourth proportional to 112,763, 155,612.94 and 68,051 is: 93,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,763 : 155,612.94 = 68,051 : x
  2. Step 2: Convert to fraction form
    112,763/155,612.94 = 68,051/x
  3. Step 3: Cross multiply
    112,763x = 155,612.94 × 68,051
  4. Step 4: Simplify right side
    112,763x = 10,589,616,179.94
  5. Step 5: Solve for x
    x = 10,589,616,179.94/112,763
  6. Step 6: Final answer
    x = 93,910.38

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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.