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Finding the Fourth Proportional to 149,261.84, 205,940.58 and 103,888.88

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Solution

The fourth proportional to 149,261.84, 205,940.58 and 103,888.88 is: 143,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,261.84 : 205,940.58 = 103,888.88 : x
  2. Step 2: Convert to fraction form
    149,261.84/205,940.58 = 103,888.88/x
  3. Step 3: Cross multiply
    149,261.84x = 205,940.58 × 103,888.88
  4. Step 4: Simplify right side
    149,261.84x = 21,394,936,202.75
  5. Step 5: Solve for x
    x = 21,394,936,202.75/149,261.84
  6. Step 6: Final answer
    x = 143,338.29

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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.