Finding the Fourth Proportional to 154,953.36, 213,826.68 and 86,963.84
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Solution
The fourth proportional to 154,953.36, 213,826.68 and 86,963.84 is: 120,005.07
Step by Step Solution
- Step 1: Write the proportion equation
154,953.36 : 213,826.68 = 86,963.84 : x - Step 2: Convert to fraction form
154,953.36/213,826.68 = 86,963.84/x - Step 3: Cross multiply
154,953.36x = 213,826.68 × 86,963.84 - Step 4: Simplify right side
154,953.36x = 18,595,189,187.25 - Step 5: Solve for x
x = 18,595,189,187.25/154,953.36 - Step 6: Final answer
x = 120,005.07
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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.