Finding the Fourth Proportional to 136,629.40, 188,549.64 and 76,203.88
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Solution
The fourth proportional to 136,629.40, 188,549.64 and 76,203.88 is: 105,161.95
Step by Step Solution
- Step 1: Write the proportion equation
136,629.40 : 188,549.64 = 76,203.88 : x - Step 2: Convert to fraction form
136,629.40/188,549.64 = 76,203.88/x - Step 3: Cross multiply
136,629.40x = 188,549.64 × 76,203.88 - Step 4: Simplify right side
136,629.40x = 14,368,214,140.60 - Step 5: Solve for x
x = 14,368,214,140.60/136,629.40 - Step 6: Final answer
x = 105,161.95
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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.