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Finding the Fourth Proportional to 123,235.97, 169,911.54 and 102,847.35

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Solution

The fourth proportional to 123,235.97, 169,911.54 and 102,847.35 is: 141,800.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,235.97 : 169,911.54 = 102,847.35 : x
  2. Step 2: Convert to fraction form
    123,235.97/169,911.54 = 102,847.35/x
  3. Step 3: Cross multiply
    123,235.97x = 169,911.54 × 102,847.35
  4. Step 4: Simplify right side
    123,235.97x = 17,474,952,260.59
  5. Step 5: Solve for x
    x = 17,474,952,260.59/123,235.97
  6. Step 6: Final answer
    x = 141,800.75

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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.