Finding the Fourth Proportional to 135,158.81, 202,821.60 and 68,646.68
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Solution
The fourth proportional to 135,158.81, 202,821.60 and 68,646.68 is: 103,012.36
Step by Step Solution
- Step 1: Write the proportion equation
135,158.81 : 202,821.60 = 68,646.68 : x - Step 2: Convert to fraction form
135,158.81/202,821.60 = 68,646.68/x - Step 3: Cross multiply
135,158.81x = 202,821.60 × 68,646.68 - Step 4: Simplify right side
135,158.81x = 13,923,028,114.95 - Step 5: Solve for x
x = 13,923,028,114.95/135,158.81 - Step 6: Final answer
x = 103,012.36
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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.