Finding the Fourth Proportional to 128,505.96, 177,393.84 and 96,682.68
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Solution
The fourth proportional to 128,505.96, 177,393.84 and 96,682.68 is: 133,463.94
Step by Step Solution
- Step 1: Write the proportion equation
128,505.96 : 177,393.84 = 96,682.68 : x - Step 2: Convert to fraction form
128,505.96/177,393.84 = 96,682.68/x - Step 3: Cross multiply
128,505.96x = 177,393.84 × 96,682.68 - Step 4: Simplify right side
128,505.96x = 17,150,911,866.69 - Step 5: Solve for x
x = 17,150,911,866.69/128,505.96 - Step 6: Final answer
x = 133,463.94
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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.