Finding the Fourth Proportional to 100,102,163.60, 139,802,906.80 and 100,102,163.60
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Solution
The fourth proportional to 100,102,163.60, 139,802,906.80 and 100,102,163.60 is: 139,802,906.80
Step by Step Solution
- Step 1: Write the proportion equation
100,102,163.60 : 139,802,906.80 = 100,102,163.60 : x - Step 2: Convert to fraction form
100,102,163.60/139,802,906.80 = 100,102,163.60/x - Step 3: Cross multiply
100,102,163.60x = 139,802,906.80 × 100,102,163.60 - Step 4: Simplify right side
100,102,163.60x = 13,994,573,448,249,152 - Step 5: Solve for x
x = 13,994,573,448,249,152/100,102,163.60 - Step 6: Final answer
x = 139,802,906.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.