Finding the Fourth Proportional to 129,863,170.38, 179,207,745.06 and 74,107,591.44
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Solution
The fourth proportional to 129,863,170.38, 179,207,745.06 and 74,107,591.44 is: 102,266,518.79
Step by Step Solution
- Step 1: Write the proportion equation
129,863,170.38 : 179,207,745.06 = 74,107,591.44 : x - Step 2: Convert to fraction form
129,863,170.38/179,207,745.06 = 74,107,591.44/x - Step 3: Cross multiply
129,863,170.38x = 179,207,745.06 × 74,107,591.44 - Step 4: Simplify right side
129,863,170.38x = 13,280,654,353,790,158 - Step 5: Solve for x
x = 13,280,654,353,790,158/129,863,170.38 - Step 6: Final answer
x = 102,266,518.79
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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.