Finding the Fourth Proportional to 128,282.08, 192,319.42 and 53,458.60
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Solution
The fourth proportional to 128,282.08, 192,319.42 and 53,458.60 is: 80,144.69
Step by Step Solution
- Step 1: Write the proportion equation
128,282.08 : 192,319.42 = 53,458.60 : x - Step 2: Convert to fraction form
128,282.08/192,319.42 = 53,458.60/x - Step 3: Cross multiply
128,282.08x = 192,319.42 × 53,458.60 - Step 4: Simplify right side
128,282.08x = 10,281,126,946.01 - Step 5: Solve for x
x = 10,281,126,946.01/128,282.08 - Step 6: Final answer
x = 80,144.69
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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.