Finding the Fourth Proportional to 145,715.40, 201,092.28 and 85,291.68
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Solution
The fourth proportional to 145,715.40, 201,092.28 and 85,291.68 is: 117,705.46
Step by Step Solution
- Step 1: Write the proportion equation
145,715.40 : 201,092.28 = 85,291.68 : x - Step 2: Convert to fraction form
145,715.40/201,092.28 = 85,291.68/x - Step 3: Cross multiply
145,715.40x = 201,092.28 × 85,291.68 - Step 4: Simplify right side
145,715.40x = 17,151,498,396.23 - Step 5: Solve for x
x = 17,151,498,396.23/145,715.40 - Step 6: Final answer
x = 117,705.46
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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.