Finding the Fourth Proportional to 124,077.76, 171,135.62 and 78,716.68
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Solution
The fourth proportional to 124,077.76, 171,135.62 and 78,716.68 is: 108,570.85
Step by Step Solution
- Step 1: Write the proportion equation
124,077.76 : 171,135.62 = 78,716.68 : x - Step 2: Convert to fraction form
124,077.76/171,135.62 = 78,716.68/x - Step 3: Cross multiply
124,077.76x = 171,135.62 × 78,716.68 - Step 4: Simplify right side
124,077.76x = 13,471,227,836.14 - Step 5: Solve for x
x = 13,471,227,836.14/124,077.76 - Step 6: Final answer
x = 108,570.85
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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.