Finding the Fourth Proportional to 136,710.40, 205,130.94 and 74,380.84
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Solution
The fourth proportional to 136,710.40, 205,130.94 and 74,380.84 is: 111,606.81
Step by Step Solution
- Step 1: Write the proportion equation
136,710.40 : 205,130.94 = 74,380.84 : x - Step 2: Convert to fraction form
136,710.40/205,130.94 = 74,380.84/x - Step 3: Cross multiply
136,710.40x = 205,130.94 × 74,380.84 - Step 4: Simplify right side
136,710.40x = 15,257,811,627.19 - Step 5: Solve for x
x = 15,257,811,627.19/136,710.40 - Step 6: Final answer
x = 111,606.81
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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.