Finding the Fourth Proportional to 122,515.05, 169,089.08 and 74,796.13
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Solution
The fourth proportional to 122,515.05, 169,089.08 and 74,796.13 is: 103,229.84
Step by Step Solution
- Step 1: Write the proportion equation
122,515.05 : 169,089.08 = 74,796.13 : x - Step 2: Convert to fraction form
122,515.05/169,089.08 = 74,796.13/x - Step 3: Cross multiply
122,515.05x = 169,089.08 × 74,796.13 - Step 4: Simplify right side
122,515.05x = 12,647,208,809.26 - Step 5: Solve for x
x = 12,647,208,809.26/122,515.05 - Step 6: Final answer
x = 103,229.84
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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.