Finding the Fourth Proportional to 129,310,147.20, 193,965,220.80 and 129,310,147.20
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Solution
The fourth proportional to 129,310,147.20, 193,965,220.80 and 129,310,147.20 is: 193,965,220.80
Step by Step Solution
- Step 1: Write the proportion equation
129,310,147.20 : 193,965,220.80 = 129,310,147.20 : x - Step 2: Convert to fraction form
129,310,147.20/193,965,220.80 = 129,310,147.20/x - Step 3: Cross multiply
129,310,147.20x = 193,965,220.80 × 129,310,147.20 - Step 4: Simplify right side
129,310,147.20x = 25,081,671,253,328,504 - Step 5: Solve for x
x = 25,081,671,253,328,504/129,310,147.20 - Step 6: Final answer
x = 193,965,220.80
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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.