Finding the Fourth Proportional to 129,014,512.80, 193,596,418.80 and 48,243,645.60
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Solution
The fourth proportional to 129,014,512.80, 193,596,418.80 and 48,243,645.60 is: 72,393,382.85
Step by Step Solution
- Step 1: Write the proportion equation
129,014,512.80 : 193,596,418.80 = 48,243,645.60 : x - Step 2: Convert to fraction form
129,014,512.80/193,596,418.80 = 48,243,645.60/x - Step 3: Cross multiply
129,014,512.80x = 193,596,418.80 × 48,243,645.60 - Step 4: Simplify right side
129,014,512.80x = 9,339,797,018,016,378 - Step 5: Solve for x
x = 9,339,797,018,016,378/129,014,512.80 - Step 6: Final answer
x = 72,393,382.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.