Finding the Fourth Proportional to 136,125.41, 187,857.63 and 74,874.19
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Solution
The fourth proportional to 136,125.41, 187,857.63 and 74,874.19 is: 103,328.89
Step by Step Solution
- Step 1: Write the proportion equation
136,125.41 : 187,857.63 = 74,874.19 : x - Step 2: Convert to fraction form
136,125.41/187,857.63 = 74,874.19/x - Step 3: Cross multiply
136,125.41x = 187,857.63 × 74,874.19 - Step 4: Simplify right side
136,125.41x = 14,065,687,507.20 - Step 5: Solve for x
x = 14,065,687,507.20/136,125.41 - Step 6: Final answer
x = 103,328.89
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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.