Finding the Fourth Proportional to 137,647,668.61, 189,958,793.99 and 74,920,734.19
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Solution
The fourth proportional to 137,647,668.61, 189,958,793.99 and 74,920,734.19 is: 103,393,340.80
Step by Step Solution
- Step 1: Write the proportion equation
137,647,668.61 : 189,958,793.99 = 74,920,734.19 : x - Step 2: Convert to fraction form
137,647,668.61/189,958,793.99 = 74,920,734.19/x - Step 3: Cross multiply
137,647,668.61x = 189,958,793.99 × 74,920,734.19 - Step 4: Simplify right side
137,647,668.61x = 14,231,852,311,577,760 - Step 5: Solve for x
x = 14,231,852,311,577,760/137,647,668.61 - Step 6: Final answer
x = 103,393,340.80
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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.