Finding the Fourth Proportional to 231,162,059.12, 319,001,955.48 and 126,738,408.08
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Solution
The fourth proportional to 231,162,059.12, 319,001,955.48 and 126,738,408.08 is: 174,898,078.72
Step by Step Solution
- Step 1: Write the proportion equation
231,162,059.12 : 319,001,955.48 = 126,738,408.08 : x - Step 2: Convert to fraction form
231,162,059.12/319,001,955.48 = 126,738,408.08/x - Step 3: Cross multiply
231,162,059.12x = 319,001,955.48 × 126,738,408.08 - Step 4: Simplify right side
231,162,059.12x = 40,429,800,011,942,232 - Step 5: Solve for x
x = 40,429,800,011,942,232/231,162,059.12 - Step 6: Final answer
x = 174,898,078.72
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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.