Home / 199,388.03-299,138.54-81,144.23

Finding the Fourth Proportional to 199,388.03, 299,138.54 and 81,144.23

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Solution

The fourth proportional to 199,388.03, 299,138.54 and 81,144.23 is: 121,739.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,388.03 : 299,138.54 = 81,144.23 : x
  2. Step 2: Convert to fraction form
    199,388.03/299,138.54 = 81,144.23/x
  3. Step 3: Cross multiply
    199,388.03x = 299,138.54 × 81,144.23
  4. Step 4: Simplify right side
    199,388.03x = 24,273,364,590.21
  5. Step 5: Solve for x
    x = 24,273,364,590.21/199,388.03
  6. Step 6: Final answer
    x = 121,739.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.