Finding the Fourth Proportional to 209,313.08, 313,971.56 and 67,158.65
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Solution
The fourth proportional to 209,313.08, 313,971.56 and 67,158.65 is: 100,738.60
Step by Step Solution
- Step 1: Write the proportion equation
209,313.08 : 313,971.56 = 67,158.65 : x - Step 2: Convert to fraction form
209,313.08/313,971.56 = 67,158.65/x - Step 3: Cross multiply
209,313.08x = 313,971.56 × 67,158.65 - Step 4: Simplify right side
209,313.08x = 21,085,906,808.97 - Step 5: Solve for x
x = 21,085,906,808.97/209,313.08 - Step 6: Final answer
x = 100,738.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.