Finding the Fourth Proportional to 203,933,130.78, 305,955,919.68 and 81,197,639.22
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Solution
The fourth proportional to 203,933,130.78, 305,955,919.68 and 81,197,639.22 is: 121,818,844.68
Step by Step Solution
- Step 1: Write the proportion equation
203,933,130.78 : 305,955,919.68 = 81,197,639.22 : x - Step 2: Convert to fraction form
203,933,130.78/305,955,919.68 = 81,197,639.22/x - Step 3: Cross multiply
203,933,130.78x = 305,955,919.68 × 81,197,639.22 - Step 4: Simplify right side
203,933,130.78x = 24,842,898,383,399,940 - Step 5: Solve for x
x = 24,842,898,383,399,940/203,933,130.78 - Step 6: Final answer
x = 121,818,844.68
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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.