Finding the Fourth Proportional to 129,413,409.80, 194,120,114.70 and 61,388,961.80
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Solution
The fourth proportional to 129,413,409.80, 194,120,114.70 and 61,388,961.80 is: 92,083,442.70
Step by Step Solution
- Step 1: Write the proportion equation
129,413,409.80 : 194,120,114.70 = 61,388,961.80 : x - Step 2: Convert to fraction form
129,413,409.80/194,120,114.70 = 61,388,961.80/x - Step 3: Cross multiply
129,413,409.80x = 194,120,114.70 × 61,388,961.80 - Step 4: Simplify right side
129,413,409.80x = 11,916,832,305,929,918 - Step 5: Solve for x
x = 11,916,832,305,929,918/129,413,409.80 - Step 6: Final answer
x = 92,083,442.70
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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.