Finding the Fourth Proportional to 140,448.99, 193,819.63 and 76,786.81
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Solution
The fourth proportional to 140,448.99, 193,819.63 and 76,786.81 is: 105,965.81
Step by Step Solution
- Step 1: Write the proportion equation
140,448.99 : 193,819.63 = 76,786.81 : x - Step 2: Convert to fraction form
140,448.99/193,819.63 = 76,786.81/x - Step 3: Cross multiply
140,448.99x = 193,819.63 × 76,786.81 - Step 4: Simplify right side
140,448.99x = 14,882,791,103.08 - Step 5: Solve for x
x = 14,882,791,103.08/140,448.99 - Step 6: Final answer
x = 105,965.81
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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.