Finding the Fourth Proportional to 128,849.18, 192,227.56 and 121,874.02
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Solution
The fourth proportional to 128,849.18, 192,227.56 and 121,874.02 is: 181,821.45
Step by Step Solution
- Step 1: Write the proportion equation
128,849.18 : 192,227.56 = 121,874.02 : x - Step 2: Convert to fraction form
128,849.18/192,227.56 = 121,874.02/x - Step 3: Cross multiply
128,849.18x = 192,227.56 × 121,874.02 - Step 4: Simplify right side
128,849.18x = 23,427,544,466.45 - Step 5: Solve for x
x = 23,427,544,466.45/128,849.18 - Step 6: Final answer
x = 181,821.45
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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.