Finding the Fourth Proportional to 129,941.36, 179,321.99 and 76,265.09
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Solution
The fourth proportional to 129,941.36, 179,321.99 and 76,265.09 is: 105,247.53
Step by Step Solution
- Step 1: Write the proportion equation
129,941.36 : 179,321.99 = 76,265.09 : x - Step 2: Convert to fraction form
129,941.36/179,321.99 = 76,265.09/x - Step 3: Cross multiply
129,941.36x = 179,321.99 × 76,265.09 - Step 4: Simplify right side
129,941.36x = 13,676,007,706.33 - Step 5: Solve for x
x = 13,676,007,706.33/129,941.36 - Step 6: Final answer
x = 105,247.53
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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.