Finding the Fourth Proportional to 129,749.99, 179,054.41 and 70,133.99
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Solution
The fourth proportional to 129,749.99, 179,054.41 and 70,133.99 is: 96,784.60
Step by Step Solution
- Step 1: Write the proportion equation
129,749.99 : 179,054.41 = 70,133.99 : x - Step 2: Convert to fraction form
129,749.99/179,054.41 = 70,133.99/x - Step 3: Cross multiply
129,749.99x = 179,054.41 × 70,133.99 - Step 4: Simplify right side
129,749.99x = 12,557,800,823.37 - Step 5: Solve for x
x = 12,557,800,823.37/129,749.99 - Step 6: Final answer
x = 96,784.60
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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.