Finding the Fourth Proportional to 102,274.62, 141,129.99 and 56,949.18
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Solution
The fourth proportional to 102,274.62, 141,129.99 and 56,949.18 is: 78,584.86
Step by Step Solution
- Step 1: Write the proportion equation
102,274.62 : 141,129.99 = 56,949.18 : x - Step 2: Convert to fraction form
102,274.62/141,129.99 = 56,949.18/x - Step 3: Cross multiply
102,274.62x = 141,129.99 × 56,949.18 - Step 4: Simplify right side
102,274.62x = 8,037,237,203.91 - Step 5: Solve for x
x = 8,037,237,203.91/102,274.62 - Step 6: Final answer
x = 78,584.86
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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.