Home / 141,918.71-195,843.62-78,256.49

Finding the Fourth Proportional to 141,918.71, 195,843.62 and 78,256.49

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Solution

The fourth proportional to 141,918.71, 195,843.62 and 78,256.49 is: 107,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,918.71 : 195,843.62 = 78,256.49 : x
  2. Step 2: Convert to fraction form
    141,918.71/195,843.62 = 78,256.49/x
  3. Step 3: Cross multiply
    141,918.71x = 195,843.62 × 78,256.49
  4. Step 4: Simplify right side
    141,918.71x = 15,326,033,506.52
  5. Step 5: Solve for x
    x = 15,326,033,506.52/141,918.71
  6. Step 6: Final answer
    x = 107,991.64

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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.