Finding the Fourth Proportional to 91,811,105.20, 137,716,657.80 and 79,853,682.70
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Solution
The fourth proportional to 91,811,105.20, 137,716,657.80 and 79,853,682.70 is: 119,780,524.05
Step by Step Solution
- Step 1: Write the proportion equation
91,811,105.20 : 137,716,657.80 = 79,853,682.70 : x - Step 2: Convert to fraction form
91,811,105.20/137,716,657.80 = 79,853,682.70/x - Step 3: Cross multiply
91,811,105.20x = 137,716,657.80 × 79,853,682.70 - Step 4: Simplify right side
91,811,105.20x = 10,997,182,294,465,682 - Step 5: Solve for x
x = 10,997,182,294,465,682/91,811,105.20 - Step 6: Final answer
x = 119,780,524.05
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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.