Finding the Fourth Proportional to 138,245.93, 207,368.81 and 79,040.09
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Solution
The fourth proportional to 138,245.93, 207,368.81 and 79,040.09 is: 118,560.09
Step by Step Solution
- Step 1: Write the proportion equation
138,245.93 : 207,368.81 = 79,040.09 : x - Step 2: Convert to fraction form
138,245.93/207,368.81 = 79,040.09/x - Step 3: Cross multiply
138,245.93x = 207,368.81 × 79,040.09 - Step 4: Simplify right side
138,245.93x = 16,390,449,405.59 - Step 5: Solve for x
x = 16,390,449,405.59/138,245.93 - Step 6: Final answer
x = 118,560.09
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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.