Finding the Fourth Proportional to 128,121.52, 192,182.97 and 84,027.50
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Solution
The fourth proportional to 128,121.52, 192,182.97 and 84,027.50 is: 126,041.70
Step by Step Solution
- Step 1: Write the proportion equation
128,121.52 : 192,182.97 = 84,027.50 : x - Step 2: Convert to fraction form
128,121.52/192,182.97 = 84,027.50/x - Step 3: Cross multiply
128,121.52x = 192,182.97 × 84,027.50 - Step 4: Simplify right side
128,121.52x = 16,148,654,536.25 - Step 5: Solve for x
x = 16,148,654,536.25/128,121.52 - Step 6: Final answer
x = 126,041.70
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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.