Finding the Fourth Proportional to 121,770.83, 167,934.83 and 76,452.99
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Solution
The fourth proportional to 121,770.83, 167,934.83 and 76,452.99 is: 105,436.75
Step by Step Solution
- Step 1: Write the proportion equation
121,770.83 : 167,934.83 = 76,452.99 : x - Step 2: Convert to fraction form
121,770.83/167,934.83 = 76,452.99/x - Step 3: Cross multiply
121,770.83x = 167,934.83 × 76,452.99 - Step 4: Simplify right side
121,770.83x = 12,839,119,496.38 - Step 5: Solve for x
x = 12,839,119,496.38/121,770.83 - Step 6: Final answer
x = 105,436.75
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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.