Finding the Fourth Proportional to 121,610.16, 167,773.69 and 81,260.01
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Solution
The fourth proportional to 121,610.16, 167,773.69 and 81,260.01 is: 112,106.52
Step by Step Solution
- Step 1: Write the proportion equation
121,610.16 : 167,773.69 = 81,260.01 : x - Step 2: Convert to fraction form
121,610.16/167,773.69 = 81,260.01/x - Step 3: Cross multiply
121,610.16x = 167,773.69 × 81,260.01 - Step 4: Simplify right side
121,610.16x = 13,633,291,727.14 - Step 5: Solve for x
x = 13,633,291,727.14/121,610.16 - Step 6: Final answer
x = 112,106.52
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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.