Finding the Fourth Proportional to 128,349.36, 177,051.02 and 74,628.44
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Solution
The fourth proportional to 128,349.36, 177,051.02 and 74,628.44 is: 102,945.90
Step by Step Solution
- Step 1: Write the proportion equation
128,349.36 : 177,051.02 = 74,628.44 : x - Step 2: Convert to fraction form
128,349.36/177,051.02 = 74,628.44/x - Step 3: Cross multiply
128,349.36x = 177,051.02 × 74,628.44 - Step 4: Simplify right side
128,349.36x = 13,213,040,164.61 - Step 5: Solve for x
x = 13,213,040,164.61/128,349.36 - Step 6: Final answer
x = 102,945.90
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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.