Finding the Fourth Proportional to 157,407.12, 217,302.12 and 106,687.92
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Solution
The fourth proportional to 157,407.12, 217,302.12 and 106,687.92 is: 147,283.75
Step by Step Solution
- Step 1: Write the proportion equation
157,407.12 : 217,302.12 = 106,687.92 : x - Step 2: Convert to fraction form
157,407.12/217,302.12 = 106,687.92/x - Step 3: Cross multiply
157,407.12x = 217,302.12 × 106,687.92 - Step 4: Simplify right side
157,407.12x = 23,183,511,194.39 - Step 5: Solve for x
x = 23,183,511,194.39/157,407.12 - Step 6: Final answer
x = 147,283.75
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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.