Finding the Fourth Proportional to 129,893.63, 179,255.97 and 71,750.07
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Solution
The fourth proportional to 129,893.63, 179,255.97 and 71,750.07 is: 99,016.63
Step by Step Solution
- Step 1: Write the proportion equation
129,893.63 : 179,255.97 = 71,750.07 : x - Step 2: Convert to fraction form
129,893.63/179,255.97 = 71,750.07/x - Step 3: Cross multiply
129,893.63x = 179,255.97 × 71,750.07 - Step 4: Simplify right side
129,893.63x = 12,861,628,395.42 - Step 5: Solve for x
x = 12,861,628,395.42/129,893.63 - Step 6: Final answer
x = 99,016.63
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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.