Finding the Fourth Proportional to 128,027.80, 192,041.70 and 115,586.20
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Solution
The fourth proportional to 128,027.80, 192,041.70 and 115,586.20 is: 173,379.30
Step by Step Solution
- Step 1: Write the proportion equation
128,027.80 : 192,041.70 = 115,586.20 : x - Step 2: Convert to fraction form
128,027.80/192,041.70 = 115,586.20/x - Step 3: Cross multiply
128,027.80x = 192,041.70 × 115,586.20 - Step 4: Simplify right side
128,027.80x = 22,197,370,344.54 - Step 5: Solve for x
x = 22,197,370,344.54/128,027.80 - Step 6: Final answer
x = 173,379.30
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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.