Finding the Fourth Proportional to 121,736.60, 167,993.36 and 68,022.05
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Solution
The fourth proportional to 121,736.60, 167,993.36 and 68,022.05 is: 93,868.66
Step by Step Solution
- Step 1: Write the proportion equation
121,736.60 : 167,993.36 = 68,022.05 : x - Step 2: Convert to fraction form
121,736.60/167,993.36 = 68,022.05/x - Step 3: Cross multiply
121,736.60x = 167,993.36 × 68,022.05 - Step 4: Simplify right side
121,736.60x = 11,427,251,553.51 - Step 5: Solve for x
x = 11,427,251,553.51/121,736.60 - Step 6: Final answer
x = 93,868.66
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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.