Finding the Fourth Proportional to 147,778.80, 221,668.20 and 128,533.20
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Solution
The fourth proportional to 147,778.80, 221,668.20 and 128,533.20 is: 192,799.80
Step by Step Solution
- Step 1: Write the proportion equation
147,778.80 : 221,668.20 = 128,533.20 : x - Step 2: Convert to fraction form
147,778.80/221,668.20 = 128,533.20/x - Step 3: Cross multiply
147,778.80x = 221,668.20 × 128,533.20 - Step 4: Simplify right side
147,778.80x = 28,491,723,084.24 - Step 5: Solve for x
x = 28,491,723,084.24/147,778.80 - Step 6: Final answer
x = 192,799.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.