Finding the Fourth Proportional to 112,463.70, 168,612.21 and 68,079.95
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Solution
The fourth proportional to 112,463.70, 168,612.21 and 68,079.95 is: 102,069.47
Step by Step Solution
- Step 1: Write the proportion equation
112,463.70 : 168,612.21 = 68,079.95 : x - Step 2: Convert to fraction form
112,463.70/168,612.21 = 68,079.95/x - Step 3: Cross multiply
112,463.70x = 168,612.21 × 68,079.95 - Step 4: Simplify right side
112,463.70x = 11,479,109,983.13 - Step 5: Solve for x
x = 11,479,109,983.13/112,463.70 - Step 6: Final answer
x = 102,069.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.