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Finding the Fourth Proportional to 123,126.44, 169,914.47 and 69,411.45

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Solution

The fourth proportional to 123,126.44, 169,914.47 and 69,411.45 is: 95,787.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,126.44 : 169,914.47 = 69,411.45 : x
  2. Step 2: Convert to fraction form
    123,126.44/169,914.47 = 69,411.45/x
  3. Step 3: Cross multiply
    123,126.44x = 169,914.47 × 69,411.45
  4. Step 4: Simplify right side
    123,126.44x = 11,794,009,391.62
  5. Step 5: Solve for x
    x = 11,794,009,391.62/123,126.44
  6. Step 6: Final answer
    x = 95,787.79

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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.