Finding the Fourth Proportional to 207,398.19, 311,142.65 and 67,170.99
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Solution
The fourth proportional to 207,398.19, 311,142.65 and 67,170.99 is: 100,771.18
Step by Step Solution
- Step 1: Write the proportion equation
207,398.19 : 311,142.65 = 67,170.99 : x - Step 2: Convert to fraction form
207,398.19/311,142.65 = 67,170.99/x - Step 3: Cross multiply
207,398.19x = 311,142.65 × 67,170.99 - Step 4: Simplify right side
207,398.19x = 20,899,759,495.87 - Step 5: Solve for x
x = 20,899,759,495.87/207,398.19 - Step 6: Final answer
x = 100,771.18
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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.