Finding the Fourth Proportional to 121,338.79, 181,058.94 and 108,730.42
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Solution
The fourth proportional to 121,338.79, 181,058.94 and 108,730.42 is: 162,245.02
Step by Step Solution
- Step 1: Write the proportion equation
121,338.79 : 181,058.94 = 108,730.42 : x - Step 2: Convert to fraction form
121,338.79/181,058.94 = 108,730.42/x - Step 3: Cross multiply
121,338.79x = 181,058.94 × 108,730.42 - Step 4: Simplify right side
121,338.79x = 19,686,614,138.31 - Step 5: Solve for x
x = 19,686,614,138.31/121,338.79 - Step 6: Final answer
x = 162,245.02
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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.