Finding the Fourth Proportional to 138,629.63, 207,913.79 and 38,762.98
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Solution
The fourth proportional to 138,629.63, 207,913.79 and 38,762.98 is: 58,135.89
Step by Step Solution
- Step 1: Write the proportion equation
138,629.63 : 207,913.79 = 38,762.98 : x - Step 2: Convert to fraction form
138,629.63/207,913.79 = 38,762.98/x - Step 3: Cross multiply
138,629.63x = 207,913.79 × 38,762.98 - Step 4: Simplify right side
138,629.63x = 8,059,357,660.62 - Step 5: Solve for x
x = 8,059,357,660.62/138,629.63 - Step 6: Final answer
x = 58,135.89
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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.