Home / 141,876.54-195,791.00-78,216.66

Finding the Fourth Proportional to 141,876.54, 195,791.00 and 78,216.66

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Solution

The fourth proportional to 141,876.54, 195,791.00 and 78,216.66 is: 107,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,876.54 : 195,791.00 = 78,216.66 : x
  2. Step 2: Convert to fraction form
    141,876.54/195,791.00 = 78,216.66/x
  3. Step 3: Cross multiply
    141,876.54x = 195,791.00 × 78,216.66
  4. Step 4: Simplify right side
    141,876.54x = 15,314,117,686.98
  5. Step 5: Solve for x
    x = 15,314,117,686.98/141,876.54
  6. Step 6: Final answer
    x = 107,939.75

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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.