Finding the Fourth Proportional to 122,381,998.20, 183,572,997.30 and 115,201,639.80
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Solution
The fourth proportional to 122,381,998.20, 183,572,997.30 and 115,201,639.80 is: 172,802,459.70
Step by Step Solution
- Step 1: Write the proportion equation
122,381,998.20 : 183,572,997.30 = 115,201,639.80 : x - Step 2: Convert to fraction form
122,381,998.20/183,572,997.30 = 115,201,639.80/x - Step 3: Cross multiply
122,381,998.20x = 183,572,997.30 × 115,201,639.80 - Step 4: Simplify right side
122,381,998.20x = 21,147,910,311,960,972 - Step 5: Solve for x
x = 21,147,910,311,960,972/122,381,998.20 - Step 6: Final answer
x = 172,802,459.70
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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.