Finding the Fourth Proportional to 156,405.76, 215,841.49 and 84,785.63
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Solution
The fourth proportional to 156,405.76, 215,841.49 and 84,785.63 is: 117,005.00
Step by Step Solution
- Step 1: Write the proportion equation
156,405.76 : 215,841.49 = 84,785.63 : x - Step 2: Convert to fraction form
156,405.76/215,841.49 = 84,785.63/x - Step 3: Cross multiply
156,405.76x = 215,841.49 × 84,785.63 - Step 4: Simplify right side
156,405.76x = 18,300,255,418.62 - Step 5: Solve for x
x = 18,300,255,418.62/156,405.76 - Step 6: Final answer
x = 117,005.00
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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.