Finding the Fourth Proportional to 106,326.60, 159,489.90 and 71,305.80
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Solution
The fourth proportional to 106,326.60, 159,489.90 and 71,305.80 is: 106,958.70
Step by Step Solution
- Step 1: Write the proportion equation
106,326.60 : 159,489.90 = 71,305.80 : x - Step 2: Convert to fraction form
106,326.60/159,489.90 = 71,305.80/x - Step 3: Cross multiply
106,326.60x = 159,489.90 × 71,305.80 - Step 4: Simplify right side
106,326.60x = 11,372,554,911.42 - Step 5: Solve for x
x = 11,372,554,911.42/106,326.60 - Step 6: Final answer
x = 106,958.70
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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.