Finding the Fourth Proportional to 128,525.94, 177,366.69 and 74,842.26
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Solution
The fourth proportional to 128,525.94, 177,366.69 and 74,842.26 is: 103,282.84
Step by Step Solution
- Step 1: Write the proportion equation
128,525.94 : 177,366.69 = 74,842.26 : x - Step 2: Convert to fraction form
128,525.94/177,366.69 = 74,842.26/x - Step 3: Cross multiply
128,525.94x = 177,366.69 × 74,842.26 - Step 4: Simplify right side
128,525.94x = 13,274,523,928.32 - Step 5: Solve for x
x = 13,274,523,928.32/128,525.94 - Step 6: Final answer
x = 103,282.84
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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.