Finding the Fourth Proportional to 135,043.26, 186,334.18 and 81,331.75
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Solution
The fourth proportional to 135,043.26, 186,334.18 and 81,331.75 is: 112,222.45
Step by Step Solution
- Step 1: Write the proportion equation
135,043.26 : 186,334.18 = 81,331.75 : x - Step 2: Convert to fraction form
135,043.26/186,334.18 = 81,331.75/x - Step 3: Cross multiply
135,043.26x = 186,334.18 × 81,331.75 - Step 4: Simplify right side
135,043.26x = 15,154,884,944.22 - Step 5: Solve for x
x = 15,154,884,944.22/135,043.26 - Step 6: Final answer
x = 112,222.45
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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.