Finding the Fourth Proportional to 157,329.12, 217,114.39 and 85,709.33
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Solution
The fourth proportional to 157,329.12, 217,114.39 and 85,709.33 is: 118,278.99
Step by Step Solution
- Step 1: Write the proportion equation
157,329.12 : 217,114.39 = 85,709.33 : x - Step 2: Convert to fraction form
157,329.12/217,114.39 = 85,709.33/x - Step 3: Cross multiply
157,329.12x = 217,114.39 × 85,709.33 - Step 4: Simplify right side
157,329.12x = 18,608,728,900.26 - Step 5: Solve for x
x = 18,608,728,900.26/157,329.12 - Step 6: Final answer
x = 118,278.99
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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.