Finding the Fourth Proportional to 157,921.14, 217,912.08 and 89,938.26
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Solution
The fourth proportional to 157,921.14, 217,912.08 and 89,938.26 is: 124,103.92
Step by Step Solution
- Step 1: Write the proportion equation
157,921.14 : 217,912.08 = 89,938.26 : x - Step 2: Convert to fraction form
157,921.14/217,912.08 = 89,938.26/x - Step 3: Cross multiply
157,921.14x = 217,912.08 × 89,938.26 - Step 4: Simplify right side
157,921.14x = 19,598,633,308.18 - Step 5: Solve for x
x = 19,598,633,308.18/157,921.14 - Step 6: Final answer
x = 124,103.92
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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.