Finding the Fourth Proportional to 120,296,999.84, 165,981,394.68 and 68,086,037.12
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Solution
The fourth proportional to 120,296,999.84, 165,981,394.68 and 68,086,037.12 is: 93,942,620.47
Step by Step Solution
- Step 1: Write the proportion equation
120,296,999.84 : 165,981,394.68 = 68,086,037.12 : x - Step 2: Convert to fraction form
120,296,999.84/165,981,394.68 = 68,086,037.12/x - Step 3: Cross multiply
120,296,999.84x = 165,981,394.68 × 68,086,037.12 - Step 4: Simplify right side
120,296,999.84x = 11,301,015,399,411,852 - Step 5: Solve for x
x = 11,301,015,399,411,852/120,296,999.84 - Step 6: Final answer
x = 93,942,620.47
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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.