Finding the Fourth Proportional to 132,855.19, 183,236.39 and 85,113.07
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Solution
The fourth proportional to 132,855.19, 183,236.39 and 85,113.07 is: 117,389.55
Step by Step Solution
- Step 1: Write the proportion equation
132,855.19 : 183,236.39 = 85,113.07 : x - Step 2: Convert to fraction form
132,855.19/183,236.39 = 85,113.07/x - Step 3: Cross multiply
132,855.19x = 183,236.39 × 85,113.07 - Step 4: Simplify right side
132,855.19x = 15,595,811,263.05 - Step 5: Solve for x
x = 15,595,811,263.05/132,855.19 - Step 6: Final answer
x = 117,389.55
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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.