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Finding the Fourth Proportional to 199,467.92, 299,201.06 and 81,138.26

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Solution

The fourth proportional to 199,467.92, 299,201.06 and 81,138.26 is: 121,707.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,467.92 : 299,201.06 = 81,138.26 : x
  2. Step 2: Convert to fraction form
    199,467.92/299,201.06 = 81,138.26/x
  3. Step 3: Cross multiply
    199,467.92x = 299,201.06 × 81,138.26
  4. Step 4: Simplify right side
    199,467.92x = 24,276,653,398.56
  5. Step 5: Solve for x
    x = 24,276,653,398.56/199,467.92
  6. Step 6: Final answer
    x = 121,707.06

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1.5x scale

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.