Finding the Fourth Proportional to 156,460.44, 215,914.84 and 84,840.28
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Solution
The fourth proportional to 156,460.44, 215,914.84 and 84,840.28 is: 117,079.28
Step by Step Solution
- Step 1: Write the proportion equation
156,460.44 : 215,914.84 = 84,840.28 : x - Step 2: Convert to fraction form
156,460.44/215,914.84 = 84,840.28/x - Step 3: Cross multiply
156,460.44x = 215,914.84 × 84,840.28 - Step 4: Simplify right side
156,460.44x = 18,318,275,481.76 - Step 5: Solve for x
x = 18,318,275,481.76/156,460.44 - Step 6: Final answer
x = 117,079.28
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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.