Finding the Fourth Proportional to 86,163.60, 128,953.80 and 86,163.60
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Solution
The fourth proportional to 86,163.60, 128,953.80 and 86,163.60 is: 128,953.80
Step by Step Solution
- Step 1: Write the proportion equation
86,163.60 : 128,953.80 = 86,163.60 : x - Step 2: Convert to fraction form
86,163.60/128,953.80 = 86,163.60/x - Step 3: Cross multiply
86,163.60x = 128,953.80 × 86,163.60 - Step 4: Simplify right side
86,163.60x = 11,111,123,641.68 - Step 5: Solve for x
x = 11,111,123,641.68/86,163.60 - Step 6: Final answer
x = 128,953.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.