Finding the Fourth Proportional to 108,311,932.05, 149,304,614.58 and 66,418,308.96
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Solution
The fourth proportional to 108,311,932.05, 149,304,614.58 and 66,418,308.96 is: 91,555,563.94
Step by Step Solution
- Step 1: Write the proportion equation
108,311,932.05 : 149,304,614.58 = 66,418,308.96 : x - Step 2: Convert to fraction form
108,311,932.05/149,304,614.58 = 66,418,308.96/x - Step 3: Cross multiply
108,311,932.05x = 149,304,614.58 × 66,418,308.96 - Step 4: Simplify right side
108,311,932.05x = 9,916,560,020,328,162 - Step 5: Solve for x
x = 9,916,560,020,328,162/108,311,932.05 - Step 6: Final answer
x = 91,555,563.94
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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.