Finding the Fourth Proportional to 154,282.28, 212,906.68 and 87,214.28
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Solution
The fourth proportional to 154,282.28, 212,906.68 and 87,214.28 is: 120,354.09
Step by Step Solution
- Step 1: Write the proportion equation
154,282.28 : 212,906.68 = 87,214.28 : x - Step 2: Convert to fraction form
154,282.28/212,906.68 = 87,214.28/x - Step 3: Cross multiply
154,282.28x = 212,906.68 × 87,214.28 - Step 4: Simplify right side
154,282.28x = 18,568,502,803.39 - Step 5: Solve for x
x = 18,568,502,803.39/154,282.28 - Step 6: Final answer
x = 120,354.09
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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.