Finding the Fourth Proportional to 156,644.60, 216,163.73 and 85,023.08
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Solution
The fourth proportional to 156,644.60, 216,163.73 and 85,023.08 is: 117,328.69
Step by Step Solution
- Step 1: Write the proportion equation
156,644.60 : 216,163.73 = 85,023.08 : x - Step 2: Convert to fraction form
156,644.60/216,163.73 = 85,023.08/x - Step 3: Cross multiply
156,644.60x = 216,163.73 × 85,023.08 - Step 4: Simplify right side
156,644.60x = 18,378,904,602.95 - Step 5: Solve for x
x = 18,378,904,602.95/156,644.60 - Step 6: Final answer
x = 117,328.69
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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.