Finding the Fourth Proportional to 128,938.48, 192,525.29 and 115,524.88
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Solution
The fourth proportional to 128,938.48, 192,525.29 and 115,524.88 is: 172,496.69
Step by Step Solution
- Step 1: Write the proportion equation
128,938.48 : 192,525.29 = 115,524.88 : x - Step 2: Convert to fraction form
128,938.48/192,525.29 = 115,524.88/x - Step 3: Cross multiply
128,938.48x = 192,525.29 × 115,524.88 - Step 4: Simplify right side
128,938.48x = 22,241,461,024.22 - Step 5: Solve for x
x = 22,241,461,024.22/128,938.48 - Step 6: Final answer
x = 172,496.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.