Finding the Fourth Proportional to 128,758,680.80, 193,172,235.60 and 55,944,216.80
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Solution
The fourth proportional to 128,758,680.80, 193,172,235.60 and 55,944,216.80 is: 83,931,190.98
Step by Step Solution
- Step 1: Write the proportion equation
128,758,680.80 : 193,172,235.60 = 55,944,216.80 : x - Step 2: Convert to fraction form
128,758,680.80/193,172,235.60 = 55,944,216.80/x - Step 3: Cross multiply
128,758,680.80x = 193,172,235.60 × 55,944,216.80 - Step 4: Simplify right side
128,758,680.80x = 10,806,869,428,147,078 - Step 5: Solve for x
x = 10,806,869,428,147,078/128,758,680.80 - Step 6: Final answer
x = 83,931,190.98
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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.