Finding the Fourth Proportional to 121,425.60, 182,138.40 and 110,539.20
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Solution
The fourth proportional to 121,425.60, 182,138.40 and 110,539.20 is: 165,808.80
Step by Step Solution
- Step 1: Write the proportion equation
121,425.60 : 182,138.40 = 110,539.20 : x - Step 2: Convert to fraction form
121,425.60/182,138.40 = 110,539.20/x - Step 3: Cross multiply
121,425.60x = 182,138.40 × 110,539.20 - Step 4: Simplify right side
121,425.60x = 20,133,433,025.28 - Step 5: Solve for x
x = 20,133,433,025.28/121,425.60 - Step 6: Final answer
x = 165,808.80
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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.