Finding the Fourth Proportional to 106,531.86, 147,067.18 and 66,258.62
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Solution
The fourth proportional to 106,531.86, 147,067.18 and 66,258.62 is: 91,469.99
Step by Step Solution
- Step 1: Write the proportion equation
106,531.86 : 147,067.18 = 66,258.62 : x - Step 2: Convert to fraction form
106,531.86/147,067.18 = 66,258.62/x - Step 3: Cross multiply
106,531.86x = 147,067.18 × 66,258.62 - Step 4: Simplify right side
106,531.86x = 9,744,467,658.76 - Step 5: Solve for x
x = 9,744,467,658.76/106,531.86 - Step 6: Final answer
x = 91,469.99
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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.