Home / 151,287.36-208,778.09-83,310.65

Finding the Fourth Proportional to 151,287.36, 208,778.09 and 83,310.65

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Solution

The fourth proportional to 151,287.36, 208,778.09 and 83,310.65 is: 114,969.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,287.36 : 208,778.09 = 83,310.65 : x
  2. Step 2: Convert to fraction form
    151,287.36/208,778.09 = 83,310.65/x
  3. Step 3: Cross multiply
    151,287.36x = 208,778.09 × 83,310.65
  4. Step 4: Simplify right side
    151,287.36x = 17,393,438,383.66
  5. Step 5: Solve for x
    x = 17,393,438,383.66/151,287.36
  6. Step 6: Final answer
    x = 114,969.54

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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.