Finding the Fourth Proportional to 159,794.70, 220,509.28 and 91,763.80
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Solution
The fourth proportional to 159,794.70, 220,509.28 and 91,763.80 is: 126,629.79
Step by Step Solution
- Step 1: Write the proportion equation
159,794.70 : 220,509.28 = 91,763.80 : x - Step 2: Convert to fraction form
159,794.70/220,509.28 = 91,763.80/x - Step 3: Cross multiply
159,794.70x = 220,509.28 × 91,763.80 - Step 4: Simplify right side
159,794.70x = 20,234,769,468.06 - Step 5: Solve for x
x = 20,234,769,468.06/159,794.70 - Step 6: Final answer
x = 126,629.79
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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.