Finding the Fourth Proportional to 197,782.11, 272,940.63 and 107,138.08
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Solution
The fourth proportional to 197,782.11, 272,940.63 and 107,138.08 is: 147,851.26
Step by Step Solution
- Step 1: Write the proportion equation
197,782.11 : 272,940.63 = 107,138.08 : x - Step 2: Convert to fraction form
197,782.11/272,940.63 = 107,138.08/x - Step 3: Cross multiply
197,782.11x = 272,940.63 × 107,138.08 - Step 4: Simplify right side
197,782.11x = 29,242,335,052.19 - Step 5: Solve for x
x = 29,242,335,052.19/197,782.11 - Step 6: Final answer
x = 147,851.26
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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.