Finding the Fourth Proportional to 121,528.91, 167,745.09 and 70,553.09
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Solution
The fourth proportional to 121,528.91, 167,745.09 and 70,553.09 is: 97,383.69
Step by Step Solution
- Step 1: Write the proportion equation
121,528.91 : 167,745.09 = 70,553.09 : x - Step 2: Convert to fraction form
121,528.91/167,745.09 = 70,553.09/x - Step 3: Cross multiply
121,528.91x = 167,745.09 × 70,553.09 - Step 4: Simplify right side
121,528.91x = 11,834,933,593.10 - Step 5: Solve for x
x = 11,834,933,593.10/121,528.91 - Step 6: Final answer
x = 97,383.69
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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.