Finding the Fourth Proportional to 121,770.36, 167,934.33 and 76,452.62
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Solution
The fourth proportional to 121,770.36, 167,934.33 and 76,452.62 is: 105,436.32
Step by Step Solution
- Step 1: Write the proportion equation
121,770.36 : 167,934.33 = 76,452.62 : x - Step 2: Convert to fraction form
121,770.36/167,934.33 = 76,452.62/x - Step 3: Cross multiply
121,770.36x = 167,934.33 × 76,452.62 - Step 4: Simplify right side
121,770.36x = 12,839,018,676.77 - Step 5: Solve for x
x = 12,839,018,676.77/121,770.36 - Step 6: Final answer
x = 105,436.32
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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.