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Finding the Fourth Proportional to 122,612.56, 183,787.96 and 69,908.56

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Solution

The fourth proportional to 122,612.56, 183,787.96 and 69,908.56 is: 104,788.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,612.56 : 183,787.96 = 69,908.56 : x
  2. Step 2: Convert to fraction form
    122,612.56/183,787.96 = 69,908.56/x
  3. Step 3: Cross multiply
    122,612.56x = 183,787.96 × 69,908.56
  4. Step 4: Simplify right side
    122,612.56x = 12,848,351,628.94
  5. Step 5: Solve for x
    x = 12,848,351,628.94/122,612.56
  6. Step 6: Final answer
    x = 104,788.22

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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.