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Finding the Fourth Proportional to 159,906.25, 220,674.07 and 88,290.81

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Solution

The fourth proportional to 159,906.25, 220,674.07 and 88,290.81 is: 121,843.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,906.25 : 220,674.07 = 88,290.81 : x
  2. Step 2: Convert to fraction form
    159,906.25/220,674.07 = 88,290.81/x
  3. Step 3: Cross multiply
    159,906.25x = 220,674.07 × 88,290.81
  4. Step 4: Simplify right side
    159,906.25x = 19,483,492,496.66
  5. Step 5: Solve for x
    x = 19,483,492,496.66/159,906.25
  6. Step 6: Final answer
    x = 121,843.22

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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.