Finding the Fourth Proportional to 156,162.06, 215,499.69 and 87,252.08
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Solution
The fourth proportional to 156,162.06, 215,499.69 and 87,252.08 is: 120,405.65
Step by Step Solution
- Step 1: Write the proportion equation
156,162.06 : 215,499.69 = 87,252.08 : x - Step 2: Convert to fraction form
156,162.06/215,499.69 = 87,252.08/x - Step 3: Cross multiply
156,162.06x = 215,499.69 × 87,252.08 - Step 4: Simplify right side
156,162.06x = 18,802,795,114.36 - Step 5: Solve for x
x = 18,802,795,114.36/156,162.06 - Step 6: Final answer
x = 120,405.65
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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.