Finding the Fourth Proportional to 129,787.75, 179,107.10 and 70,171.75
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Solution
The fourth proportional to 129,787.75, 179,107.10 and 70,171.75 is: 96,837.02
Step by Step Solution
- Step 1: Write the proportion equation
129,787.75 : 179,107.10 = 70,171.75 : x - Step 2: Convert to fraction form
129,787.75/179,107.10 = 70,171.75/x - Step 3: Cross multiply
129,787.75x = 179,107.10 × 70,171.75 - Step 4: Simplify right side
129,787.75x = 12,568,258,293.57 - Step 5: Solve for x
x = 12,568,258,293.57/129,787.75 - Step 6: Final answer
x = 96,837.02
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1.5x scale
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.