Finding the Fourth Proportional to 261,112,129,863.97, 391,847,103,322.80 and 91,131,718,850.87
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Solution
The fourth proportional to 261,112,129,863.97, 391,847,103,322.80 and 91,131,718,850.87 is: 136,760,019,808.90
Step by Step Solution
- Step 1: Write the proportion equation
261,112,129,863.97 : 391,847,103,322.80 = 91,131,718,850.87 : x - Step 2: Convert to fraction form
261,112,129,863.97/391,847,103,322.80 = 91,131,718,850.87/x - Step 3: Cross multiply
261,112,129,863.97x = 391,847,103,322.80 × 91,131,718,850.87 - Step 4: Simplify right side
261,112,129,863.97x = 35,709,700,052,539,259,486,208 - Step 5: Solve for x
x = 35,709,700,052,539,259,486,208/261,112,129,863.97 - Step 6: Final answer
x = 136,760,019,808.90
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1.5x scale
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.