Finding the Fourth Proportional to 198,631.98, 274,108.86 and 107,990.19
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Solution
The fourth proportional to 198,631.98, 274,108.86 and 107,990.19 is: 149,024.68
Step by Step Solution
- Step 1: Write the proportion equation
198,631.98 : 274,108.86 = 107,990.19 : x - Step 2: Convert to fraction form
198,631.98/274,108.86 = 107,990.19/x - Step 3: Cross multiply
198,631.98x = 274,108.86 × 107,990.19 - Step 4: Simplify right side
198,631.98x = 29,601,067,872.08 - Step 5: Solve for x
x = 29,601,067,872.08/198,631.98 - Step 6: Final answer
x = 149,024.68
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1.5x scale
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.