Finding the Fourth Proportional to 136,772.19, 188,777.12 and 80,201.79
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Solution
The fourth proportional to 136,772.19, 188,777.12 and 80,201.79 is: 110,696.94
Step by Step Solution
- Step 1: Write the proportion equation
136,772.19 : 188,777.12 = 80,201.79 : x - Step 2: Convert to fraction form
136,772.19/188,777.12 = 80,201.79/x - Step 3: Cross multiply
136,772.19x = 188,777.12 × 80,201.79 - Step 4: Simplify right side
136,772.19x = 15,140,262,534.04 - Step 5: Solve for x
x = 15,140,262,534.04/136,772.19 - Step 6: Final answer
x = 110,696.94
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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.