Finding the Fourth Proportional to 128,336.81, 192,503.99 and 34,842.56
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Solution
The fourth proportional to 128,336.81, 192,503.99 and 34,842.56 is: 52,263.50
Step by Step Solution
- Step 1: Write the proportion equation
128,336.81 : 192,503.99 = 34,842.56 : x - Step 2: Convert to fraction form
128,336.81/192,503.99 = 34,842.56/x - Step 3: Cross multiply
128,336.81x = 192,503.99 × 34,842.56 - Step 4: Simplify right side
128,336.81x = 6,707,330,946.40 - Step 5: Solve for x
x = 6,707,330,946.40/128,336.81 - Step 6: Final answer
x = 52,263.50
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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.