Finding the Fourth Proportional to 120,394,775.36, 166,146,966.79 and 68,194,613.72
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Solution
The fourth proportional to 120,394,775.36, 166,146,966.79 and 68,194,613.72 is: 94,109,799.92
Step by Step Solution
- Step 1: Write the proportion equation
120,394,775.36 : 166,146,966.79 = 68,194,613.72 : x - Step 2: Convert to fraction form
120,394,775.36/166,146,966.79 = 68,194,613.72/x - Step 3: Cross multiply
120,394,775.36x = 166,146,966.79 × 68,194,613.72 - Step 4: Simplify right side
120,394,775.36x = 11,330,328,219,822,010 - Step 5: Solve for x
x = 11,330,328,219,822,010/120,394,775.36 - Step 6: Final answer
x = 94,109,799.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.