Finding the Fourth Proportional to 157,392.26, 217,201.35 and 85,772.30
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Solution
The fourth proportional to 157,392.26, 217,201.35 and 85,772.30 is: 118,365.79
Step by Step Solution
- Step 1: Write the proportion equation
157,392.26 : 217,201.35 = 85,772.30 : x - Step 2: Convert to fraction form
157,392.26/217,201.35 = 85,772.30/x - Step 3: Cross multiply
157,392.26x = 217,201.35 × 85,772.30 - Step 4: Simplify right side
157,392.26x = 18,629,858,266.60 - Step 5: Solve for x
x = 18,629,858,266.60/157,392.26 - Step 6: Final answer
x = 118,365.79
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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.