Finding the Fourth Proportional to 128,284.28, 177,037.84 and 73,095.32
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Solution
The fourth proportional to 128,284.28, 177,037.84 and 73,095.32 is: 100,874.69
Step by Step Solution
- Step 1: Write the proportion equation
128,284.28 : 177,037.84 = 73,095.32 : x - Step 2: Convert to fraction form
128,284.28/177,037.84 = 73,095.32/x - Step 3: Cross multiply
128,284.28x = 177,037.84 × 73,095.32 - Step 4: Simplify right side
128,284.28x = 12,940,637,566.91 - Step 5: Solve for x
x = 12,940,637,566.91/128,284.28 - Step 6: Final answer
x = 100,874.69
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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.