Finding the Fourth Proportional to 138,701.80, 208,052.70 and 133,258.60
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Solution
The fourth proportional to 138,701.80, 208,052.70 and 133,258.60 is: 199,887.90
Step by Step Solution
- Step 1: Write the proportion equation
138,701.80 : 208,052.70 = 133,258.60 : x - Step 2: Convert to fraction form
138,701.80/208,052.70 = 133,258.60/x - Step 3: Cross multiply
138,701.80x = 208,052.70 × 133,258.60 - Step 4: Simplify right side
138,701.80x = 27,724,811,528.22 - Step 5: Solve for x
x = 27,724,811,528.22/138,701.80 - Step 6: Final answer
x = 199,887.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.