Finding the Fourth Proportional to 128,626.94, 177,445.94 and 83,319.99
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Solution
The fourth proportional to 128,626.94, 177,445.94 and 83,319.99 is: 114,943.22
Step by Step Solution
- Step 1: Write the proportion equation
128,626.94 : 177,445.94 = 83,319.99 : x - Step 2: Convert to fraction form
128,626.94/177,445.94 = 83,319.99/x - Step 3: Cross multiply
128,626.94x = 177,445.94 × 83,319.99 - Step 4: Simplify right side
128,626.94x = 14,784,793,529.74 - Step 5: Solve for x
x = 14,784,793,529.74/128,626.94 - Step 6: Final answer
x = 114,943.22
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.