Finding the Fourth Proportional to 113,904.78, 170,857.80 and 74,710.14
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Solution
The fourth proportional to 113,904.78, 170,857.80 and 74,710.14 is: 112,065.62
Step by Step Solution
- Step 1: Write the proportion equation
113,904.78 : 170,857.80 = 74,710.14 : x - Step 2: Convert to fraction form
113,904.78/170,857.80 = 74,710.14/x - Step 3: Cross multiply
113,904.78x = 170,857.80 × 74,710.14 - Step 4: Simplify right side
113,904.78x = 12,764,810,158.09 - Step 5: Solve for x
x = 12,764,810,158.09/113,904.78 - Step 6: Final answer
x = 112,065.62
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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.