Finding the Fourth Proportional to 149,770.38, 206,679.16 and 81,783.84
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Solution
The fourth proportional to 149,770.38, 206,679.16 and 81,783.84 is: 112,859.54
Step by Step Solution
- Step 1: Write the proportion equation
149,770.38 : 206,679.16 = 81,783.84 : x - Step 2: Convert to fraction form
149,770.38/206,679.16 = 81,783.84/x - Step 3: Cross multiply
149,770.38x = 206,679.16 × 81,783.84 - Step 4: Simplify right side
149,770.38x = 16,903,016,230.05 - Step 5: Solve for x
x = 16,903,016,230.05/149,770.38 - Step 6: Final answer
x = 112,859.54
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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.