Finding the Fourth Proportional to 202,015.74, 278,782.27 and 121,489.38
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Solution
The fourth proportional to 202,015.74, 278,782.27 and 121,489.38 is: 167,655.67
Step by Step Solution
- Step 1: Write the proportion equation
202,015.74 : 278,782.27 = 121,489.38 : x - Step 2: Convert to fraction form
202,015.74/278,782.27 = 121,489.38/x - Step 3: Cross multiply
202,015.74x = 278,782.27 × 121,489.38 - Step 4: Simplify right side
202,015.74x = 33,869,085,137.29 - Step 5: Solve for x
x = 33,869,085,137.29/202,015.74 - Step 6: Final answer
x = 167,655.67
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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.