Finding the Fourth Proportional to 135,348.81, 202,909.02 and 85,318.60
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Solution
The fourth proportional to 135,348.81, 202,909.02 and 85,318.60 is: 127,905.92
Step by Step Solution
- Step 1: Write the proportion equation
135,348.81 : 202,909.02 = 85,318.60 : x - Step 2: Convert to fraction form
135,348.81/202,909.02 = 85,318.60/x - Step 3: Cross multiply
135,348.81x = 202,909.02 × 85,318.60 - Step 4: Simplify right side
135,348.81x = 17,311,913,513.77 - Step 5: Solve for x
x = 17,311,913,513.77/135,348.81 - Step 6: Final answer
x = 127,905.92
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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.