Finding the Fourth Proportional to 145,896.40, 201,387.26 and 85,486.60
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Solution
The fourth proportional to 145,896.40, 201,387.26 and 85,486.60 is: 118,000.94
Step by Step Solution
- Step 1: Write the proportion equation
145,896.40 : 201,387.26 = 85,486.60 : x - Step 2: Convert to fraction form
145,896.40/201,387.26 = 85,486.60/x - Step 3: Cross multiply
145,896.40x = 201,387.26 × 85,486.60 - Step 4: Simplify right side
145,896.40x = 17,215,912,606.17 - Step 5: Solve for x
x = 17,215,912,606.17/145,896.40 - Step 6: Final answer
x = 118,000.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.