Finding the Fourth Proportional to 261,112,129,863.10, 391,847,103,321.49 and 91,131,718,849.99
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Solution
The fourth proportional to 261,112,129,863.10, 391,847,103,321.49 and 91,131,718,849.99 is: 136,760,019,807.58
Step by Step Solution
- Step 1: Write the proportion equation
261,112,129,863.10 : 391,847,103,321.49 = 91,131,718,849.99 : x - Step 2: Convert to fraction form
261,112,129,863.10/391,847,103,321.49 = 91,131,718,849.99/x - Step 3: Cross multiply
261,112,129,863.10x = 391,847,103,321.49 × 91,131,718,849.99 - Step 4: Simplify right side
261,112,129,863.10x = 35,709,700,052,077,009,436,672 - Step 5: Solve for x
x = 35,709,700,052,077,009,436,672/261,112,129,863.10 - Step 6: Final answer
x = 136,760,019,807.58
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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.