Finding the Fourth Proportional to 128,236.74, 192,285.18 and 39,466.68
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Solution
The fourth proportional to 128,236.74, 192,285.18 and 39,466.68 is: 59,178.50
Step by Step Solution
- Step 1: Write the proportion equation
128,236.74 : 192,285.18 = 39,466.68 : x - Step 2: Convert to fraction form
128,236.74/192,285.18 = 39,466.68/x - Step 3: Cross multiply
128,236.74x = 192,285.18 × 39,466.68 - Step 4: Simplify right side
128,236.74x = 7,588,857,667.80 - Step 5: Solve for x
x = 7,588,857,667.80/128,236.74 - Step 6: Final answer
x = 59,178.50
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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.