Finding the Fourth Proportional to 128,201.76, 192,297.06 and 39,464.28
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Solution
The fourth proportional to 128,201.76, 192,297.06 and 39,464.28 is: 59,194.70
Step by Step Solution
- Step 1: Write the proportion equation
128,201.76 : 192,297.06 = 39,464.28 : x - Step 2: Convert to fraction form
128,201.76/192,297.06 = 39,464.28/x - Step 3: Cross multiply
128,201.76x = 192,297.06 × 39,464.28 - Step 4: Simplify right side
128,201.76x = 7,588,865,019.02 - Step 5: Solve for x
x = 7,588,865,019.02/128,201.76 - Step 6: Final answer
x = 59,194.70
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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.