Finding the Fourth Proportional to 126,019.71, 173,907.11 and 69,431.09
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Solution
The fourth proportional to 126,019.71, 173,907.11 and 69,431.09 is: 95,814.85
Step by Step Solution
- Step 1: Write the proportion equation
126,019.71 : 173,907.11 = 69,431.09 : x - Step 2: Convert to fraction form
126,019.71/173,907.11 = 69,431.09/x - Step 3: Cross multiply
126,019.71x = 173,907.11 × 69,431.09 - Step 4: Simplify right side
126,019.71x = 12,074,558,989.36 - Step 5: Solve for x
x = 12,074,558,989.36/126,019.71 - Step 6: Final answer
x = 95,814.85
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1.5x scale
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.