Finding the Fourth Proportional to 100,163.19, 138,236.19 and 63,865.93
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Solution
The fourth proportional to 100,163.19, 138,236.19 and 63,865.93 is: 88,141.99
Step by Step Solution
- Step 1: Write the proportion equation
100,163.19 : 138,236.19 = 63,865.93 : x - Step 2: Convert to fraction form
100,163.19/138,236.19 = 63,865.93/x - Step 3: Cross multiply
100,163.19x = 138,236.19 × 63,865.93 - Step 4: Simplify right side
100,163.19x = 8,828,582,834.01 - Step 5: Solve for x
x = 8,828,582,834.01/100,163.19 - Step 6: Final answer
x = 88,141.99
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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.