Finding the Fourth Proportional to 139,318,163.62, 192,259,188.81 and 76,595,328.82
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Solution
The fourth proportional to 139,318,163.62, 192,259,188.81 and 76,595,328.82 is: 105,701,621.40
Step by Step Solution
- Step 1: Write the proportion equation
139,318,163.62 : 192,259,188.81 = 76,595,328.82 : x - Step 2: Convert to fraction form
139,318,163.62/192,259,188.81 = 76,595,328.82/x - Step 3: Cross multiply
139,318,163.62x = 192,259,188.81 × 76,595,328.82 - Step 4: Simplify right side
139,318,163.62x = 14,726,155,785,568,414 - Step 5: Solve for x
x = 14,726,155,785,568,414/139,318,163.62 - Step 6: Final answer
x = 105,701,621.40
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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.