Finding the Fourth Proportional to 136,752.58, 188,705.77 and 79,376.68
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Solution
The fourth proportional to 136,752.58, 188,705.77 and 79,376.68 is: 109,532.39
Step by Step Solution
- Step 1: Write the proportion equation
136,752.58 : 188,705.77 = 79,376.68 : x - Step 2: Convert to fraction form
136,752.58/188,705.77 = 79,376.68/x - Step 3: Cross multiply
136,752.58x = 188,705.77 × 79,376.68 - Step 4: Simplify right side
136,752.58x = 14,978,837,519.44 - Step 5: Solve for x
x = 14,978,837,519.44/136,752.58 - Step 6: Final answer
x = 109,532.39
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1.5x scale
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.