Home / 104,835.05-144,678.44-78,947.25

Finding the Fourth Proportional to 104,835.05, 144,678.44 and 78,947.25

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Solution

The fourth proportional to 104,835.05, 144,678.44 and 78,947.25 is: 108,951.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,835.05 : 144,678.44 = 78,947.25 : x
  2. Step 2: Convert to fraction form
    104,835.05/144,678.44 = 78,947.25/x
  3. Step 3: Cross multiply
    104,835.05x = 144,678.44 × 78,947.25
  4. Step 4: Simplify right side
    104,835.05x = 11,421,965,169.66
  5. Step 5: Solve for x
    x = 11,421,965,169.66/104,835.05
  6. Step 6: Final answer
    x = 108,951.78

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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.