Finding the Fourth Proportional to 159,192.64, 219,691.20 and 87,575.68
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Solution
The fourth proportional to 159,192.64, 219,691.20 and 87,575.68 is: 120,857.39
Step by Step Solution
- Step 1: Write the proportion equation
159,192.64 : 219,691.20 = 87,575.68 : x - Step 2: Convert to fraction form
159,192.64/219,691.20 = 87,575.68/x - Step 3: Cross multiply
159,192.64x = 219,691.20 × 87,575.68 - Step 4: Simplify right side
159,192.64x = 19,239,606,230.02 - Step 5: Solve for x
x = 19,239,606,230.02/159,192.64 - Step 6: Final answer
x = 120,857.39
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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.