Finding the Fourth Proportional to 83,471,998.80, 125,207,998.20 and 68,343,013.20
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Solution
The fourth proportional to 83,471,998.80, 125,207,998.20 and 68,343,013.20 is: 102,514,519.80
Step by Step Solution
- Step 1: Write the proportion equation
83,471,998.80 : 125,207,998.20 = 68,343,013.20 : x - Step 2: Convert to fraction form
83,471,998.80/125,207,998.20 = 68,343,013.20/x - Step 3: Cross multiply
83,471,998.80x = 125,207,998.20 × 68,343,013.20 - Step 4: Simplify right side
83,471,998.80x = 8,557,091,873,728,177 - Step 5: Solve for x
x = 8,557,091,873,728,177/83,471,998.80 - Step 6: Final answer
x = 102,514,519.80
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1.5x scale
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.