Finding the Fourth Proportional to 236,166.12, 325,907.15 and 128,736.09
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Solution
The fourth proportional to 236,166.12, 325,907.15 and 128,736.09 is: 177,654.66
Step by Step Solution
- Step 1: Write the proportion equation
236,166.12 : 325,907.15 = 128,736.09 : x - Step 2: Convert to fraction form
236,166.12/325,907.15 = 128,736.09/x - Step 3: Cross multiply
236,166.12x = 325,907.15 × 128,736.09 - Step 4: Simplify right side
236,166.12x = 41,956,011,550.36 - Step 5: Solve for x
x = 41,956,011,550.36/236,166.12 - Step 6: Final answer
x = 177,654.66
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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.