Finding the Fourth Proportional to 139,353,758.35, 192,320,441.64 and 76,640,906.09
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Solution
The fourth proportional to 139,353,758.35, 192,320,441.64 and 76,640,906.09 is: 105,771,190.40
Step by Step Solution
- Step 1: Write the proportion equation
139,353,758.35 : 192,320,441.64 = 76,640,906.09 : x - Step 2: Convert to fraction form
139,353,758.35/192,320,441.64 = 76,640,906.09/x - Step 3: Cross multiply
139,353,758.35x = 192,320,441.64 × 76,640,906.09 - Step 4: Simplify right side
139,353,758.35x = 14,739,612,906,918,566 - Step 5: Solve for x
x = 14,739,612,906,918,566/139,353,758.35 - Step 6: Final answer
x = 105,771,190.40
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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.