Finding the Fourth Proportional to 122,512.68, 169,102.98 and 74,114.64
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Solution
The fourth proportional to 122,512.68, 169,102.98 and 74,114.64 is: 102,299.67
Step by Step Solution
- Step 1: Write the proportion equation
122,512.68 : 169,102.98 = 74,114.64 : x - Step 2: Convert to fraction form
122,512.68/169,102.98 = 74,114.64/x - Step 3: Cross multiply
122,512.68x = 169,102.98 × 74,114.64 - Step 4: Simplify right side
122,512.68x = 12,533,006,485.63 - Step 5: Solve for x
x = 12,533,006,485.63/122,512.68 - Step 6: Final answer
x = 102,299.67
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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.