Finding the Fourth Proportional to 128,274.90, 192,412.26 and 34,780.68
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Solution
The fourth proportional to 128,274.90, 192,412.26 and 34,780.68 is: 52,171.00
Step by Step Solution
- Step 1: Write the proportion equation
128,274.90 : 192,412.26 = 34,780.68 : x - Step 2: Convert to fraction form
128,274.90/192,412.26 = 34,780.68/x - Step 3: Cross multiply
128,274.90x = 192,412.26 × 34,780.68 - Step 4: Simplify right side
128,274.90x = 6,692,229,243.14 - Step 5: Solve for x
x = 6,692,229,243.14/128,274.90 - Step 6: Final answer
x = 52,171.00
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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.