Finding the Fourth Proportional to 124,201.14, 171,305.07 and 78,839.70
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Solution
The fourth proportional to 124,201.14, 171,305.07 and 78,839.70 is: 108,740.07
Step by Step Solution
- Step 1: Write the proportion equation
124,201.14 : 171,305.07 = 78,839.70 : x - Step 2: Convert to fraction form
124,201.14/171,305.07 = 78,839.70/x - Step 3: Cross multiply
124,201.14x = 171,305.07 × 78,839.70 - Step 4: Simplify right side
124,201.14x = 13,505,640,327.28 - Step 5: Solve for x
x = 13,505,640,327.28/124,201.14 - Step 6: Final answer
x = 108,740.07
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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.