Finding the Fourth Proportional to 129,362,961.60, 194,044,442.40 and 52,740,979.20
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Solution
The fourth proportional to 129,362,961.60, 194,044,442.40 and 52,740,979.20 is: 79,111,468.80
Step by Step Solution
- Step 1: Write the proportion equation
129,362,961.60 : 194,044,442.40 = 52,740,979.20 : x - Step 2: Convert to fraction form
129,362,961.60/194,044,442.40 = 52,740,979.20/x - Step 3: Cross multiply
129,362,961.60x = 194,044,442.40 × 52,740,979.20 - Step 4: Simplify right side
129,362,961.60x = 10,234,093,900,493,998 - Step 5: Solve for x
x = 10,234,093,900,493,998/129,362,961.60 - Step 6: Final answer
x = 79,111,468.80
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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.