Finding the Fourth Proportional to 136,397.21, 188,228.21 and 75,979.44
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Solution
The fourth proportional to 136,397.21, 188,228.21 and 75,979.44 is: 104,851.66
Step by Step Solution
- Step 1: Write the proportion equation
136,397.21 : 188,228.21 = 75,979.44 : x - Step 2: Convert to fraction form
136,397.21/188,228.21 = 75,979.44/x - Step 3: Cross multiply
136,397.21x = 188,228.21 × 75,979.44 - Step 4: Simplify right side
136,397.21x = 14,301,473,608.11 - Step 5: Solve for x
x = 14,301,473,608.11/136,397.21 - Step 6: Final answer
x = 104,851.66
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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.