Finding the Fourth Proportional to 104,179.92, 143,778.92 and 75,132.12
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Solution
The fourth proportional to 104,179.92, 143,778.92 and 75,132.12 is: 103,689.99
Step by Step Solution
- Step 1: Write the proportion equation
104,179.92 : 143,778.92 = 75,132.12 : x - Step 2: Convert to fraction form
104,179.92/143,778.92 = 75,132.12/x - Step 3: Cross multiply
104,179.92x = 143,778.92 × 75,132.12 - Step 4: Simplify right side
104,179.92x = 10,802,415,070.91 - Step 5: Solve for x
x = 10,802,415,070.91/104,179.92 - Step 6: Final answer
x = 103,689.99
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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.