Home / 142,629.30-196,618.77-108,578.43

Finding the Fourth Proportional to 142,629.30, 196,618.77 and 108,578.43

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Solution

The fourth proportional to 142,629.30, 196,618.77 and 108,578.43 is: 149,678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,629.30 : 196,618.77 = 108,578.43 : x
  2. Step 2: Convert to fraction form
    142,629.30/196,618.77 = 108,578.43/x
  3. Step 3: Cross multiply
    142,629.30x = 196,618.77 × 108,578.43
  4. Step 4: Simplify right side
    142,629.30x = 21,348,557,355.13
  5. Step 5: Solve for x
    x = 21,348,557,355.13/142,629.30
  6. Step 6: Final answer
    x = 149,678.62

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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.