Finding the Fourth Proportional to 136,902.84, 188,913.60 and 76,465.09
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Solution
The fourth proportional to 136,902.84, 188,913.60 and 76,465.09 is: 105,514.94
Step by Step Solution
- Step 1: Write the proportion equation
136,902.84 : 188,913.60 = 76,465.09 : x - Step 2: Convert to fraction form
136,902.84/188,913.60 = 76,465.09/x - Step 3: Cross multiply
136,902.84x = 188,913.60 × 76,465.09 - Step 4: Simplify right side
136,902.84x = 14,445,295,426.22 - Step 5: Solve for x
x = 14,445,295,426.22/136,902.84 - Step 6: Final answer
x = 105,514.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.