Finding the Fourth Proportional to 190,640,201.91, 263,062,427.97 and 106,989,146.22
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Solution
The fourth proportional to 190,640,201.91, 263,062,427.97 and 106,989,146.22 is: 147,633,207.94
Step by Step Solution
- Step 1: Write the proportion equation
190,640,201.91 : 263,062,427.97 = 106,989,146.22 : x - Step 2: Convert to fraction form
190,640,201.91/263,062,427.97 = 106,989,146.22/x - Step 3: Cross multiply
190,640,201.91x = 263,062,427.97 × 106,989,146.22 - Step 4: Simplify right side
190,640,201.91x = 28,144,824,571,070,548 - Step 5: Solve for x
x = 28,144,824,571,070,548/190,640,201.91 - Step 6: Final answer
x = 147,633,207.94
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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.