Finding the Fourth Proportional to 165,403.36, 228,251.76 and 93,789.92
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Solution
The fourth proportional to 165,403.36, 228,251.76 and 93,789.92 is: 129,427.32
Step by Step Solution
- Step 1: Write the proportion equation
165,403.36 : 228,251.76 = 93,789.92 : x - Step 2: Convert to fraction form
165,403.36/228,251.76 = 93,789.92/x - Step 3: Cross multiply
165,403.36x = 228,251.76 × 93,789.92 - Step 4: Simplify right side
165,403.36x = 21,407,714,310.26 - Step 5: Solve for x
x = 21,407,714,310.26/165,403.36 - Step 6: Final answer
x = 129,427.32
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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.