Finding the Fourth Proportional to 113,877.20, 170,412.60 and 99,246.80
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Solution
The fourth proportional to 113,877.20, 170,412.60 and 99,246.80 is: 148,518.80
Step by Step Solution
- Step 1: Write the proportion equation
113,877.20 : 170,412.60 = 99,246.80 : x - Step 2: Convert to fraction form
113,877.20/170,412.60 = 99,246.80/x - Step 3: Cross multiply
113,877.20x = 170,412.60 × 99,246.80 - Step 4: Simplify right side
113,877.20x = 16,912,905,229.68 - Step 5: Solve for x
x = 16,912,905,229.68/113,877.20 - Step 6: Final answer
x = 148,518.80
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1.5x scale
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.