Finding the Fourth Proportional to 137,647,841.77, 189,959,033.45 and 74,920,907.68
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Solution
The fourth proportional to 137,647,841.77, 189,959,033.45 and 74,920,907.68 is: 103,393,580.49
Step by Step Solution
- Step 1: Write the proportion equation
137,647,841.77 : 189,959,033.45 = 74,920,907.68 : x - Step 2: Convert to fraction form
137,647,841.77/189,959,033.45 = 74,920,907.68/x - Step 3: Cross multiply
137,647,841.77x = 189,959,033.45 × 74,920,907.68 - Step 4: Simplify right side
137,647,841.77x = 14,231,903,207,801,884 - Step 5: Solve for x
x = 14,231,903,207,801,884/137,647,841.77 - Step 6: Final answer
x = 103,393,580.49
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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.