Finding the Fourth Proportional to 143,313.25, 197,770.85 and 79,649.68
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Solution
The fourth proportional to 143,313.25, 197,770.85 and 79,649.68 is: 109,915.76
Step by Step Solution
- Step 1: Write the proportion equation
143,313.25 : 197,770.85 = 79,649.68 : x - Step 2: Convert to fraction form
143,313.25/197,770.85 = 79,649.68/x - Step 3: Cross multiply
143,313.25x = 197,770.85 × 79,649.68 - Step 4: Simplify right side
143,313.25x = 15,752,383,926.97 - Step 5: Solve for x
x = 15,752,383,926.97/143,313.25 - Step 6: Final answer
x = 109,915.76
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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.