Finding the Fourth Proportional to 126,311,969.87, 174,245,227.98 and 79,929,129.77
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Solution
The fourth proportional to 126,311,969.87, 174,245,227.98 and 79,929,129.77 is: 110,260,883.85
Step by Step Solution
- Step 1: Write the proportion equation
126,311,969.87 : 174,245,227.98 = 79,929,129.77 : x - Step 2: Convert to fraction form
126,311,969.87/174,245,227.98 = 79,929,129.77/x - Step 3: Cross multiply
126,311,969.87x = 174,245,227.98 × 79,929,129.77 - Step 4: Simplify right side
126,311,969.87x = 13,927,269,439,016,654 - Step 5: Solve for x
x = 13,927,269,439,016,654/126,311,969.87 - Step 6: Final answer
x = 110,260,883.85
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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.