Home / 147,889.36-204,142.92-100,388.56

Finding the Fourth Proportional to 147,889.36, 204,142.92 and 100,388.56

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Solution

The fourth proportional to 147,889.36, 204,142.92 and 100,388.56 is: 138,573.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,889.36 : 204,142.92 = 100,388.56 : x
  2. Step 2: Convert to fraction form
    147,889.36/204,142.92 = 100,388.56/x
  3. Step 3: Cross multiply
    147,889.36x = 204,142.92 × 100,388.56
  4. Step 4: Simplify right side
    147,889.36x = 20,493,613,773.00
  5. Step 5: Solve for x
    x = 20,493,613,773.00/147,889.36
  6. Step 6: Final answer
    x = 138,573.96

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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.