Finding the Fourth Proportional to 196,787.64, 271,645.74 and 129,879.48
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Solution
The fourth proportional to 196,787.64, 271,645.74 and 129,879.48 is: 179,285.69
Step by Step Solution
- Step 1: Write the proportion equation
196,787.64 : 271,645.74 = 129,879.48 : x - Step 2: Convert to fraction form
196,787.64/271,645.74 = 129,879.48/x - Step 3: Cross multiply
196,787.64x = 271,645.74 × 129,879.48 - Step 4: Simplify right side
196,787.64x = 35,281,207,455.42 - Step 5: Solve for x
x = 35,281,207,455.42/196,787.64 - Step 6: Final answer
x = 179,285.69
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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.