Finding the Fourth Proportional to 128,976.62, 177,984.18 and 77,322.92
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Solution
The fourth proportional to 128,976.62, 177,984.18 and 77,322.92 is: 106,703.50
Step by Step Solution
- Step 1: Write the proportion equation
128,976.62 : 177,984.18 = 77,322.92 : x - Step 2: Convert to fraction form
128,976.62/177,984.18 = 77,322.92/x - Step 3: Cross multiply
128,976.62x = 177,984.18 × 77,322.92 - Step 4: Simplify right side
128,976.62x = 13,762,255,621.48 - Step 5: Solve for x
x = 13,762,255,621.48/128,976.62 - Step 6: Final answer
x = 106,703.50
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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.