Finding the Fourth Proportional to 100,154.87, 138,213.49 and 59,866.68
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Solution
The fourth proportional to 100,154.87, 138,213.49 and 59,866.68 is: 82,615.88
Step by Step Solution
- Step 1: Write the proportion equation
100,154.87 : 138,213.49 = 59,866.68 : x - Step 2: Convert to fraction form
100,154.87/138,213.49 = 59,866.68/x - Step 3: Cross multiply
100,154.87x = 138,213.49 × 59,866.68 - Step 4: Simplify right side
100,154.87x = 8,274,382,777.51 - Step 5: Solve for x
x = 8,274,382,777.51/100,154.87 - Step 6: Final answer
x = 82,615.88
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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.