Finding the Fourth Proportional to 129,492,311.40, 194,207,363.10 and 74,786,596.20
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Solution
The fourth proportional to 129,492,311.40, 194,207,363.10 and 74,786,596.20 is: 112,161,930.59
Step by Step Solution
- Step 1: Write the proportion equation
129,492,311.40 : 194,207,363.10 = 74,786,596.20 : x - Step 2: Convert to fraction form
129,492,311.40/194,207,363.10 = 74,786,596.20/x - Step 3: Cross multiply
129,492,311.40x = 194,207,363.10 × 74,786,596.20 - Step 4: Simplify right side
129,492,311.40x = 14,524,107,643,226,480 - Step 5: Solve for x
x = 14,524,107,643,226,480/129,492,311.40 - Step 6: Final answer
x = 112,161,930.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.