Finding the Fourth Proportional to 128,086.99, 192,031.49 and 48,123.26
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Solution
The fourth proportional to 128,086.99, 192,031.49 and 48,123.26 is: 72,147.70
Step by Step Solution
- Step 1: Write the proportion equation
128,086.99 : 192,031.49 = 48,123.26 : x - Step 2: Convert to fraction form
128,086.99/192,031.49 = 48,123.26/x - Step 3: Cross multiply
128,086.99x = 192,031.49 × 48,123.26 - Step 4: Simplify right side
128,086.99x = 9,241,181,801.54 - Step 5: Solve for x
x = 9,241,181,801.54/128,086.99 - Step 6: Final answer
x = 72,147.70
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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.