Finding the Fourth Proportional to 129,518,390.97, 194,222,283.57 and 74,968,629.39
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Solution
The fourth proportional to 129,518,390.97, 194,222,283.57 and 74,968,629.39 is: 112,420,933.33
Step by Step Solution
- Step 1: Write the proportion equation
129,518,390.97 : 194,222,283.57 = 74,968,629.39 : x - Step 2: Convert to fraction form
129,518,390.97/194,222,283.57 = 74,968,629.39/x - Step 3: Cross multiply
129,518,390.97x = 194,222,283.57 × 74,968,629.39 - Step 4: Simplify right side
129,518,390.97x = 14,560,578,396,238,816 - Step 5: Solve for x
x = 14,560,578,396,238,816/129,518,390.97 - Step 6: Final answer
x = 112,420,933.33
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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.