Finding the Fourth Proportional to 190,620.69, 263,088.09 and 105,765.09
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Solution
The fourth proportional to 190,620.69, 263,088.09 and 105,765.09 is: 145,973.32
Step by Step Solution
- Step 1: Write the proportion equation
190,620.69 : 263,088.09 = 105,765.09 : x - Step 2: Convert to fraction form
190,620.69/263,088.09 = 105,765.09/x - Step 3: Cross multiply
190,620.69x = 263,088.09 × 105,765.09 - Step 4: Simplify right side
190,620.69x = 27,825,535,516.78 - Step 5: Solve for x
x = 27,825,535,516.78/190,620.69 - Step 6: Final answer
x = 145,973.32
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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.