Finding the Fourth Proportional to 128,414,720.10, 192,622,080.15 and 82,498,217.70
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Solution
The fourth proportional to 128,414,720.10, 192,622,080.15 and 82,498,217.70 is: 123,747,326.55
Step by Step Solution
- Step 1: Write the proportion equation
128,414,720.10 : 192,622,080.15 = 82,498,217.70 : x - Step 2: Convert to fraction form
128,414,720.10/192,622,080.15 = 82,498,217.70/x - Step 3: Cross multiply
128,414,720.10x = 192,622,080.15 × 82,498,217.70 - Step 4: Simplify right side
128,414,720.10x = 15,890,978,302,041,550 - Step 5: Solve for x
x = 15,890,978,302,041,550/128,414,720.10 - Step 6: Final answer
x = 123,747,326.55
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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.