Finding the Fourth Proportional to 153,906.36, 212,394.14 and 84,995.62
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Solution
The fourth proportional to 153,906.36, 212,394.14 and 84,995.62 is: 117,295.81
Step by Step Solution
- Step 1: Write the proportion equation
153,906.36 : 212,394.14 = 84,995.62 : x - Step 2: Convert to fraction form
153,906.36/212,394.14 = 84,995.62/x - Step 3: Cross multiply
153,906.36x = 212,394.14 × 84,995.62 - Step 4: Simplify right side
153,906.36x = 18,052,571,613.67 - Step 5: Solve for x
x = 18,052,571,613.67/153,906.36 - Step 6: Final answer
x = 117,295.81
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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.