Home / 188,540.78-260,187.24-103,663.30

Finding the Fourth Proportional to 188,540.78, 260,187.24 and 103,663.30

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Solution

The fourth proportional to 188,540.78, 260,187.24 and 103,663.30 is: 143,055.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,540.78 : 260,187.24 = 103,663.30 : x
  2. Step 2: Convert to fraction form
    188,540.78/260,187.24 = 103,663.30/x
  3. Step 3: Cross multiply
    188,540.78x = 260,187.24 × 103,663.30
  4. Step 4: Simplify right side
    188,540.78x = 26,971,867,916.29
  5. Step 5: Solve for x
    x = 26,971,867,916.29/188,540.78
  6. Step 6: Final answer
    x = 143,055.88

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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.