Finding the Fourth Proportional to 168,394.32, 232,414.11 and 100,415.79
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Solution
The fourth proportional to 168,394.32, 232,414.11 and 100,415.79 is: 138,591.65
Step by Step Solution
- Step 1: Write the proportion equation
168,394.32 : 232,414.11 = 100,415.79 : x - Step 2: Convert to fraction form
168,394.32/232,414.11 = 100,415.79/x - Step 3: Cross multiply
168,394.32x = 232,414.11 × 100,415.79 - Step 4: Simplify right side
168,394.32x = 23,338,046,462.80 - Step 5: Solve for x
x = 23,338,046,462.80/168,394.32 - Step 6: Final answer
x = 138,591.65
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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.