Finding the Fourth Proportional to 121,611.93, 181,619.47 and 103,651.19
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Solution
The fourth proportional to 121,611.93, 181,619.47 and 103,651.19 is: 154,796.28
Step by Step Solution
- Step 1: Write the proportion equation
121,611.93 : 181,619.47 = 103,651.19 : x - Step 2: Convert to fraction form
121,611.93/181,619.47 = 103,651.19/x - Step 3: Cross multiply
121,611.93x = 181,619.47 × 103,651.19 - Step 4: Simplify right side
121,611.93x = 18,825,074,533.78 - Step 5: Solve for x
x = 18,825,074,533.78/121,611.93 - Step 6: Final answer
x = 154,796.28
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.