Finding the Fourth Proportional to 139,782,774.02, 192,900,810.77 and 77,057,493.99
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Solution
The fourth proportional to 139,782,774.02, 192,900,810.77 and 77,057,493.99 is: 106,339,662.89
Step by Step Solution
- Step 1: Write the proportion equation
139,782,774.02 : 192,900,810.77 = 77,057,493.99 : x - Step 2: Convert to fraction form
139,782,774.02/192,900,810.77 = 77,057,493.99/x - Step 3: Cross multiply
139,782,774.02x = 192,900,810.77 × 77,057,493.99 - Step 4: Simplify right side
139,782,774.02x = 14,864,453,066,190,112 - Step 5: Solve for x
x = 14,864,453,066,190,112/139,782,774.02 - Step 6: Final answer
x = 106,339,662.89
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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.