Finding the Fourth Proportional to 138,398,576.20, 207,456,146.70 and 80,861,230.60
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Solution
The fourth proportional to 138,398,576.20, 207,456,146.70 and 80,861,230.60 is: 121,209,045.49
Step by Step Solution
- Step 1: Write the proportion equation
138,398,576.20 : 207,456,146.70 = 80,861,230.60 : x - Step 2: Convert to fraction form
138,398,576.20/207,456,146.70 = 80,861,230.60/x - Step 3: Cross multiply
138,398,576.20x = 207,456,146.70 × 80,861,230.60 - Step 4: Simplify right side
138,398,576.20x = 16,775,159,317,696,126 - Step 5: Solve for x
x = 16,775,159,317,696,126/138,398,576.20 - Step 6: Final answer
x = 121,209,045.49
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.