Finding the Fourth Proportional to 147,914.64, 221,869.92 and 138,458.60
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Solution
The fourth proportional to 147,914.64, 221,869.92 and 138,458.60 is: 207,685.99
Step by Step Solution
- Step 1: Write the proportion equation
147,914.64 : 221,869.92 = 138,458.60 : x - Step 2: Convert to fraction form
147,914.64/221,869.92 = 138,458.60/x - Step 3: Cross multiply
147,914.64x = 221,869.92 × 138,458.60 - Step 4: Simplify right side
147,914.64x = 30,719,798,505.31 - Step 5: Solve for x
x = 30,719,798,505.31/147,914.64 - Step 6: Final answer
x = 207,685.99
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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.