Finding the Fourth Proportional to 121,842.93, 167,977.89 and 85,494.99
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Solution
The fourth proportional to 121,842.93, 167,977.89 and 85,494.99 is: 117,867.06
Step by Step Solution
- Step 1: Write the proportion equation
121,842.93 : 167,977.89 = 85,494.99 : x - Step 2: Convert to fraction form
121,842.93/167,977.89 = 85,494.99/x - Step 3: Cross multiply
121,842.93x = 167,977.89 × 85,494.99 - Step 4: Simplify right side
121,842.93x = 14,361,268,025.77 - Step 5: Solve for x
x = 14,361,268,025.77/121,842.93 - Step 6: Final answer
x = 117,867.06
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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.