Finding the Fourth Proportional to 135,904.80, 203,857.20 and 107,911.20
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Solution
The fourth proportional to 135,904.80, 203,857.20 and 107,911.20 is: 161,866.80
Step by Step Solution
- Step 1: Write the proportion equation
135,904.80 : 203,857.20 = 107,911.20 : x - Step 2: Convert to fraction form
135,904.80/203,857.20 = 107,911.20/x - Step 3: Cross multiply
135,904.80x = 203,857.20 × 107,911.20 - Step 4: Simplify right side
135,904.80x = 21,998,475,080.64 - Step 5: Solve for x
x = 21,998,475,080.64/135,904.80 - Step 6: Final answer
x = 161,866.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.