Finding the Fourth Proportional to 136,040.68, 187,735.14 and 76,424.68
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Solution
The fourth proportional to 136,040.68, 187,735.14 and 76,424.68 is: 105,465.50
Step by Step Solution
- Step 1: Write the proportion equation
136,040.68 : 187,735.14 = 76,424.68 : x - Step 2: Convert to fraction form
136,040.68/187,735.14 = 76,424.68/x - Step 3: Cross multiply
136,040.68x = 187,735.14 × 76,424.68 - Step 4: Simplify right side
136,040.68x = 14,347,597,999.26 - Step 5: Solve for x
x = 14,347,597,999.26/136,040.68 - Step 6: Final answer
x = 105,465.50
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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.