Finding the Fourth Proportional to 138,052.47, 190,466.61 and 112,514.96
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Solution
The fourth proportional to 138,052.47, 190,466.61 and 112,514.96 is: 155,233.31
Step by Step Solution
- Step 1: Write the proportion equation
138,052.47 : 190,466.61 = 112,514.96 : x - Step 2: Convert to fraction form
138,052.47/190,466.61 = 112,514.96/x - Step 3: Cross multiply
138,052.47x = 190,466.61 × 112,514.96 - Step 4: Simplify right side
138,052.47x = 21,430,342,053.15 - Step 5: Solve for x
x = 21,430,342,053.15/138,052.47 - Step 6: Final answer
x = 155,233.31
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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.