Finding the Fourth Proportional to 213,083,129.94, 319,639,129.11 and 74,891,936.22
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Solution
The fourth proportional to 213,083,129.94, 319,639,129.11 and 74,891,936.22 is: 112,342,977.49
Step by Step Solution
- Step 1: Write the proportion equation
213,083,129.94 : 319,639,129.11 = 74,891,936.22 : x - Step 2: Convert to fraction form
213,083,129.94/319,639,129.11 = 74,891,936.22/x - Step 3: Cross multiply
213,083,129.94x = 319,639,129.11 × 74,891,936.22 - Step 4: Simplify right side
213,083,129.94x = 23,938,393,270,722,468 - Step 5: Solve for x
x = 23,938,393,270,722,468/213,083,129.94 - Step 6: Final answer
x = 112,342,977.49
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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.