Finding the Fourth Proportional to 129,192.30, 178,170.39 and 83,826.99
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Solution
The fourth proportional to 129,192.30, 178,170.39 and 83,826.99 is: 115,606.64
Step by Step Solution
- Step 1: Write the proportion equation
129,192.30 : 178,170.39 = 83,826.99 : x - Step 2: Convert to fraction form
129,192.30/178,170.39 = 83,826.99/x - Step 3: Cross multiply
129,192.30x = 178,170.39 × 83,826.99 - Step 4: Simplify right side
129,192.30x = 14,935,487,500.83 - Step 5: Solve for x
x = 14,935,487,500.83/129,192.30 - Step 6: Final answer
x = 115,606.64
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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.