Finding the Fourth Proportional to 145,712.16, 201,093.17 and 81,186.75
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Solution
The fourth proportional to 145,712.16, 201,093.17 and 81,186.75 is: 112,043.50
Step by Step Solution
- Step 1: Write the proportion equation
145,712.16 : 201,093.17 = 81,186.75 : x - Step 2: Convert to fraction form
145,712.16/201,093.17 = 81,186.75/x - Step 3: Cross multiply
145,712.16x = 201,093.17 × 81,186.75 - Step 4: Simplify right side
145,712.16x = 16,326,100,513.56 - Step 5: Solve for x
x = 16,326,100,513.56/145,712.16 - Step 6: Final answer
x = 112,043.50
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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.