Finding the Fourth Proportional to 135,447.36, 186,855.12 and 87,716.40
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Solution
The fourth proportional to 135,447.36, 186,855.12 and 87,716.40 is: 121,008.33
Step by Step Solution
- Step 1: Write the proportion equation
135,447.36 : 186,855.12 = 87,716.40 : x - Step 2: Convert to fraction form
135,447.36/186,855.12 = 87,716.40/x - Step 3: Cross multiply
135,447.36x = 186,855.12 × 87,716.40 - Step 4: Simplify right side
135,447.36x = 16,390,258,447.97 - Step 5: Solve for x
x = 16,390,258,447.97/135,447.36 - Step 6: Final answer
x = 121,008.33
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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.