Finding the Fourth Proportional to 128,149.29, 192,209.36 and 34,647.75
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Solution
The fourth proportional to 128,149.29, 192,209.36 and 34,647.75 is: 51,967.68
Step by Step Solution
- Step 1: Write the proportion equation
128,149.29 : 192,209.36 = 34,647.75 : x - Step 2: Convert to fraction form
128,149.29/192,209.36 = 34,647.75/x - Step 3: Cross multiply
128,149.29x = 192,209.36 × 34,647.75 - Step 4: Simplify right side
128,149.29x = 6,659,621,679.70 - Step 5: Solve for x
x = 6,659,621,679.70/128,149.29 - Step 6: Final answer
x = 51,967.68
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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.