Finding the Fourth Proportional to 128,640.48, 177,525.72 and 74,924.08
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Solution
The fourth proportional to 128,640.48, 177,525.72 and 74,924.08 is: 103,396.31
Step by Step Solution
- Step 1: Write the proportion equation
128,640.48 : 177,525.72 = 74,924.08 : x - Step 2: Convert to fraction form
128,640.48/177,525.72 = 74,924.08/x - Step 3: Cross multiply
128,640.48x = 177,525.72 × 74,924.08 - Step 4: Simplify right side
128,640.48x = 13,300,951,247.34 - Step 5: Solve for x
x = 13,300,951,247.34/128,640.48 - Step 6: Final answer
x = 103,396.31
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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.