Finding the Fourth Proportional to 128,419,772.70, 192,310,794.45 and 102,910,604.70
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Solution
The fourth proportional to 128,419,772.70, 192,310,794.45 and 102,910,604.70 is: 154,110,381.38
Step by Step Solution
- Step 1: Write the proportion equation
128,419,772.70 : 192,310,794.45 = 102,910,604.70 : x - Step 2: Convert to fraction form
128,419,772.70/192,310,794.45 = 102,910,604.70/x - Step 3: Cross multiply
128,419,772.70x = 192,310,794.45 × 102,910,604.70 - Step 4: Simplify right side
128,419,772.70x = 19,790,820,147,186,904 - Step 5: Solve for x
x = 19,790,820,147,186,904/128,419,772.70 - Step 6: Final answer
x = 154,110,381.38
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.