Finding the Fourth Proportional to 144,639,349.54, 199,603,768.53 and 78,560,486.26
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Solution
The fourth proportional to 144,639,349.54, 199,603,768.53 and 78,560,486.26 is: 108,414,267.38
Step by Step Solution
- Step 1: Write the proportion equation
144,639,349.54 : 199,603,768.53 = 78,560,486.26 : x - Step 2: Convert to fraction form
144,639,349.54/199,603,768.53 = 78,560,486.26/x - Step 3: Cross multiply
144,639,349.54x = 199,603,768.53 × 78,560,486.26 - Step 4: Simplify right side
144,639,349.54x = 15,680,969,115,045,286 - Step 5: Solve for x
x = 15,680,969,115,045,286/144,639,349.54 - Step 6: Final answer
x = 108,414,267.38
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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.