Finding the Fourth Proportional to 100,356,371.97, 138,540,453.41 and 67,304,530.75
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Solution
The fourth proportional to 100,356,371.97, 138,540,453.41 and 67,304,530.75 is: 92,912,886.58
Step by Step Solution
- Step 1: Write the proportion equation
100,356,371.97 : 138,540,453.41 = 67,304,530.75 : x - Step 2: Convert to fraction form
100,356,371.97/138,540,453.41 = 67,304,530.75/x - Step 3: Cross multiply
100,356,371.97x = 138,540,453.41 × 67,304,530.75 - Step 4: Simplify right side
100,356,371.97x = 9,324,400,206,474,198 - Step 5: Solve for x
x = 9,324,400,206,474,198/100,356,371.97 - Step 6: Final answer
x = 92,912,886.58
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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.