Finding the Fourth Proportional to 132,515.60, 198,319.80 and 79,962.80
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Solution
The fourth proportional to 132,515.60, 198,319.80 and 79,962.80 is: 119,670.49
Step by Step Solution
- Step 1: Write the proportion equation
132,515.60 : 198,319.80 = 79,962.80 : x - Step 2: Convert to fraction form
132,515.60/198,319.80 = 79,962.80/x - Step 3: Cross multiply
132,515.60x = 198,319.80 × 79,962.80 - Step 4: Simplify right side
132,515.60x = 15,858,206,503.44 - Step 5: Solve for x
x = 15,858,206,503.44/132,515.60 - Step 6: Final answer
x = 119,670.49
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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.