Finding the Fourth Proportional to 157,531.23, 217,390.80 and 85,911.09
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Solution
The fourth proportional to 157,531.23, 217,390.80 and 85,911.09 is: 118,556.05
Step by Step Solution
- Step 1: Write the proportion equation
157,531.23 : 217,390.80 = 85,911.09 : x - Step 2: Convert to fraction form
157,531.23/217,390.80 = 85,911.09/x - Step 3: Cross multiply
157,531.23x = 217,390.80 × 85,911.09 - Step 4: Simplify right side
157,531.23x = 18,676,280,583.97 - Step 5: Solve for x
x = 18,676,280,583.97/157,531.23 - Step 6: Final answer
x = 118,556.05
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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.