Finding the Fourth Proportional to 145,733.20, 201,115.12 and 81,206.64
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Solution
The fourth proportional to 145,733.20, 201,115.12 and 81,206.64 is: 112,067.00
Step by Step Solution
- Step 1: Write the proportion equation
145,733.20 : 201,115.12 = 81,206.64 : x - Step 2: Convert to fraction form
145,733.20/201,115.12 = 81,206.64/x - Step 3: Cross multiply
145,733.20x = 201,115.12 × 81,206.64 - Step 4: Simplify right side
145,733.20x = 16,331,883,148.40 - Step 5: Solve for x
x = 16,331,883,148.40/145,733.20 - Step 6: Final answer
x = 112,067.00
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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.