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Finding the Fourth Proportional to 189,162.90, 261,046.55 and 104,283

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Solution

The fourth proportional to 189,162.90, 261,046.55 and 104,283 is: 143,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,162.90 : 261,046.55 = 104,283 : x
  2. Step 2: Convert to fraction form
    189,162.90/261,046.55 = 104,283/x
  3. Step 3: Cross multiply
    189,162.90x = 261,046.55 × 104,283
  4. Step 4: Simplify right side
    189,162.90x = 27,222,716,852.24
  5. Step 5: Solve for x
    x = 27,222,716,852.24/189,162.90
  6. Step 6: Final answer
    x = 143,911.50

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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.