Finding the Fourth Proportional to 145,728.66, 201,115.92 and 81,203.28
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Solution
The fourth proportional to 145,728.66, 201,115.92 and 81,203.28 is: 112,066.30
Step by Step Solution
- Step 1: Write the proportion equation
145,728.66 : 201,115.92 = 81,203.28 : x - Step 2: Convert to fraction form
145,728.66/201,115.92 = 81,203.28/x - Step 3: Cross multiply
145,728.66x = 201,115.92 × 81,203.28 - Step 4: Simplify right side
145,728.66x = 16,331,272,364.22 - Step 5: Solve for x
x = 16,331,272,364.22/145,728.66 - Step 6: Final answer
x = 112,066.30
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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.