Finding the Fourth Proportional to 132,909.12, 199,364.16 and 39,415.68
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Solution
The fourth proportional to 132,909.12, 199,364.16 and 39,415.68 is: 59,123.66
Step by Step Solution
- Step 1: Write the proportion equation
132,909.12 : 199,364.16 = 39,415.68 : x - Step 2: Convert to fraction form
132,909.12/199,364.16 = 39,415.68/x - Step 3: Cross multiply
132,909.12x = 199,364.16 × 39,415.68 - Step 4: Simplify right side
132,909.12x = 7,858,073,934.03 - Step 5: Solve for x
x = 7,858,073,934.03/132,909.12 - Step 6: Final answer
x = 59,123.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.