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Finding the Fourth Proportional to 149,260.84, 205,939.20 and 103,887.88

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Solution

The fourth proportional to 149,260.84, 205,939.20 and 103,887.88 is: 143,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,260.84 : 205,939.20 = 103,887.88 : x
  2. Step 2: Convert to fraction form
    149,260.84/205,939.20 = 103,887.88/x
  3. Step 3: Cross multiply
    149,260.84x = 205,939.20 × 103,887.88
  4. Step 4: Simplify right side
    149,260.84x = 21,394,586,896.90
  5. Step 5: Solve for x
    x = 21,394,586,896.90/149,260.84
  6. Step 6: Final answer
    x = 143,336.91

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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.