Finding the Fourth Proportional to 100,292.74, 138,405.07 and 54,969.73
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Solution
The fourth proportional to 100,292.74, 138,405.07 and 54,969.73 is: 75,858.82
Step by Step Solution
- Step 1: Write the proportion equation
100,292.74 : 138,405.07 = 54,969.73 : x - Step 2: Convert to fraction form
100,292.74/138,405.07 = 54,969.73/x - Step 3: Cross multiply
100,292.74x = 138,405.07 × 54,969.73 - Step 4: Simplify right side
100,292.74x = 7,608,089,051.23 - Step 5: Solve for x
x = 7,608,089,051.23/100,292.74 - Step 6: Final answer
x = 75,858.82
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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.