Finding the Fourth Proportional to 128,005.24, 176,645.60 and 73,556.75
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Solution
The fourth proportional to 128,005.24, 176,645.60 and 73,556.75 is: 101,507.39
Step by Step Solution
- Step 1: Write the proportion equation
128,005.24 : 176,645.60 = 73,556.75 : x - Step 2: Convert to fraction form
128,005.24/176,645.60 = 73,556.75/x - Step 3: Cross multiply
128,005.24x = 176,645.60 × 73,556.75 - Step 4: Simplify right side
128,005.24x = 12,993,477,296.94 - Step 5: Solve for x
x = 12,993,477,296.94/128,005.24 - Step 6: Final answer
x = 101,507.39
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1.5x scale
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.