Finding the Fourth Proportional to 116,390.40, 160,639.68 and 68,640.96
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Solution
The fourth proportional to 116,390.40, 160,639.68 and 68,640.96 is: 94,736.87
Step by Step Solution
- Step 1: Write the proportion equation
116,390.40 : 160,639.68 = 68,640.96 : x - Step 2: Convert to fraction form
116,390.40/160,639.68 = 68,640.96/x - Step 3: Cross multiply
116,390.40x = 160,639.68 × 68,640.96 - Step 4: Simplify right side
116,390.40x = 11,026,461,849.29 - Step 5: Solve for x
x = 11,026,461,849.29/116,390.40 - Step 6: Final answer
x = 94,736.87
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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.