Finding the Fourth Proportional to 128,851.19, 192,230.55 and 121,876.03
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Solution
The fourth proportional to 128,851.19, 192,230.55 and 121,876.03 is: 181,824.45
Step by Step Solution
- Step 1: Write the proportion equation
128,851.19 : 192,230.55 = 121,876.03 : x - Step 2: Convert to fraction form
128,851.19/192,230.55 = 121,876.03/x - Step 3: Cross multiply
128,851.19x = 192,230.55 × 121,876.03 - Step 4: Simplify right side
128,851.19x = 23,428,296,278.72 - Step 5: Solve for x
x = 23,428,296,278.72/128,851.19 - Step 6: Final answer
x = 181,824.45
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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.