Finding the Fourth Proportional to 153,741.75, 212,163.66 and 86,673.75
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Solution
The fourth proportional to 153,741.75, 212,163.66 and 86,673.75 is: 119,609.80
Step by Step Solution
- Step 1: Write the proportion equation
153,741.75 : 212,163.66 = 86,673.75 : x - Step 2: Convert to fraction form
153,741.75/212,163.66 = 86,673.75/x - Step 3: Cross multiply
153,741.75x = 212,163.66 × 86,673.75 - Step 4: Simplify right side
153,741.75x = 18,389,020,025.93 - Step 5: Solve for x
x = 18,389,020,025.93/153,741.75 - Step 6: Final answer
x = 119,609.80
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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.