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Finding the Fourth Proportional to 189,054.84, 260,895.43 and 104,171.90

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Solution

The fourth proportional to 189,054.84, 260,895.43 and 104,171.90 is: 143,757.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,054.84 : 260,895.43 = 104,171.90 : x
  2. Step 2: Convert to fraction form
    189,054.84/260,895.43 = 104,171.90/x
  3. Step 3: Cross multiply
    189,054.84x = 260,895.43 × 104,171.90
  4. Step 4: Simplify right side
    189,054.84x = 27,177,972,203.92
  5. Step 5: Solve for x
    x = 27,177,972,203.92/189,054.84
  6. Step 6: Final answer
    x = 143,757.09

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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.