Finding the Fourth Proportional to 102,119.19, 140,992.97 and 91,330.53
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Solution
The fourth proportional to 102,119.19, 140,992.97 and 91,330.53 is: 126,097.38
Step by Step Solution
- Step 1: Write the proportion equation
102,119.19 : 140,992.97 = 91,330.53 : x - Step 2: Convert to fraction form
102,119.19/140,992.97 = 91,330.53/x - Step 3: Cross multiply
102,119.19x = 140,992.97 × 91,330.53 - Step 4: Simplify right side
102,119.19x = 12,876,962,219.72 - Step 5: Solve for x
x = 12,876,962,219.72/102,119.19 - Step 6: Final answer
x = 126,097.38
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1.5x scale
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.