Finding the Fourth Proportional to 125,005,891.36, 172,491,770.74 and 72,084,553.66
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Solution
The fourth proportional to 125,005,891.36, 172,491,770.74 and 72,084,553.66 is: 99,467,250.45
Step by Step Solution
- Step 1: Write the proportion equation
125,005,891.36 : 172,491,770.74 = 72,084,553.66 : x - Step 2: Convert to fraction form
125,005,891.36/172,491,770.74 = 72,084,553.66/x - Step 3: Cross multiply
125,005,891.36x = 172,491,770.74 × 72,084,553.66 - Step 4: Simplify right side
125,005,891.36x = 12,433,992,303,815,948 - Step 5: Solve for x
x = 12,433,992,303,815,948/125,005,891.36 - Step 6: Final answer
x = 99,467,250.45
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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.