Finding the Fourth Proportional to 102,308.19, 141,207.09 and 68,754.75
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Solution
The fourth proportional to 102,308.19, 141,207.09 and 68,754.75 is: 94,896.20
Step by Step Solution
- Step 1: Write the proportion equation
102,308.19 : 141,207.09 = 68,754.75 : x - Step 2: Convert to fraction form
102,308.19/141,207.09 = 68,754.75/x - Step 3: Cross multiply
102,308.19x = 141,207.09 × 68,754.75 - Step 4: Simplify right side
102,308.19x = 9,708,658,171.18 - Step 5: Solve for x
x = 9,708,658,171.18/102,308.19 - Step 6: Final answer
x = 94,896.20
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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.