Home / 189,780.25-261,896.73-103,739.59

Finding the Fourth Proportional to 189,780.25, 261,896.73 and 103,739.59

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Solution

The fourth proportional to 189,780.25, 261,896.73 and 103,739.59 is: 143,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,780.25 : 261,896.73 = 103,739.59 : x
  2. Step 2: Convert to fraction form
    189,780.25/261,896.73 = 103,739.59/x
  3. Step 3: Cross multiply
    189,780.25x = 261,896.73 × 103,739.59
  4. Step 4: Simplify right side
    189,780.25x = 27,169,059,392.54
  5. Step 5: Solve for x
    x = 27,169,059,392.54/189,780.25
  6. Step 6: Final answer
    x = 143,160.63

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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.