Finding the Fourth Proportional to 121,444.71, 182,229.02 and 81,918.99
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Solution
The fourth proportional to 121,444.71, 182,229.02 and 81,918.99 is: 122,920.27
Step by Step Solution
- Step 1: Write the proportion equation
121,444.71 : 182,229.02 = 81,918.99 : x - Step 2: Convert to fraction form
121,444.71/182,229.02 = 81,918.99/x - Step 3: Cross multiply
121,444.71x = 182,229.02 × 81,918.99 - Step 4: Simplify right side
121,444.71x = 14,928,016,857.49 - Step 5: Solve for x
x = 14,928,016,857.49/121,444.71 - Step 6: Final answer
x = 122,920.27
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.