Finding the Fourth Proportional to 128,849.19, 192,227.57 and 121,874.03
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Solution
The fourth proportional to 128,849.19, 192,227.57 and 121,874.03 is: 181,821.46
Step by Step Solution
- Step 1: Write the proportion equation
128,849.19 : 192,227.57 = 121,874.03 : x - Step 2: Convert to fraction form
128,849.19/192,227.57 = 121,874.03/x - Step 3: Cross multiply
128,849.19x = 192,227.57 × 121,874.03 - Step 4: Simplify right side
128,849.19x = 23,427,548,724.93 - Step 5: Solve for x
x = 23,427,548,724.93/128,849.19 - Step 6: Final answer
x = 181,821.46
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1.5x scale
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.