Finding the Fourth Proportional to 136,764.36, 205,220.21 and 66,643.68
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Solution
The fourth proportional to 136,764.36, 205,220.21 and 66,643.68 is: 100,001.42
Step by Step Solution
- Step 1: Write the proportion equation
136,764.36 : 205,220.21 = 66,643.68 : x - Step 2: Convert to fraction form
136,764.36/205,220.21 = 66,643.68/x - Step 3: Cross multiply
136,764.36x = 205,220.21 × 66,643.68 - Step 4: Simplify right side
136,764.36x = 13,676,629,671.55 - Step 5: Solve for x
x = 13,676,629,671.55/136,764.36 - Step 6: Final answer
x = 100,001.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.