Finding the Fourth Proportional to 135,246.40, 202,869.60 and 68,660.80
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Solution
The fourth proportional to 135,246.40, 202,869.60 and 68,660.80 is: 102,991.20
Step by Step Solution
- Step 1: Write the proportion equation
135,246.40 : 202,869.60 = 68,660.80 : x - Step 2: Convert to fraction form
135,246.40/202,869.60 = 68,660.80/x - Step 3: Cross multiply
135,246.40x = 202,869.60 × 68,660.80 - Step 4: Simplify right side
135,246.40x = 13,929,189,031.68 - Step 5: Solve for x
x = 13,929,189,031.68/135,246.40 - Step 6: Final answer
x = 102,991.20
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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.