Finding the Fourth Proportional to 139,782,129.16, 192,899,922.84 and 77,056,850.50
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Solution
The fourth proportional to 139,782,129.16, 192,899,922.84 and 77,056,850.50 is: 106,338,775.96
Step by Step Solution
- Step 1: Write the proportion equation
139,782,129.16 : 192,899,922.84 = 77,056,850.50 : x - Step 2: Convert to fraction form
139,782,129.16/192,899,922.84 = 77,056,850.50/x - Step 3: Cross multiply
139,782,129.16x = 192,899,922.84 × 77,056,850.50 - Step 4: Simplify right side
139,782,129.16x = 14,864,260,515,743,416 - Step 5: Solve for x
x = 14,864,260,515,743,416/139,782,129.16 - Step 6: Final answer
x = 106,338,775.96
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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.