Finding the Fourth Proportional to 128,525.24, 177,331.20 and 74,064.08
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Solution
The fourth proportional to 128,525.24, 177,331.20 and 74,064.08 is: 102,189.05
Step by Step Solution
- Step 1: Write the proportion equation
128,525.24 : 177,331.20 = 74,064.08 : x - Step 2: Convert to fraction form
128,525.24/177,331.20 = 74,064.08/x - Step 3: Cross multiply
128,525.24x = 177,331.20 × 74,064.08 - Step 4: Simplify right side
128,525.24x = 13,133,872,183.30 - Step 5: Solve for x
x = 13,133,872,183.30/128,525.24 - Step 6: Final answer
x = 102,189.05
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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.