Finding the Fourth Proportional to 124,713.70, 172,102.11 and 68,125.30
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Solution
The fourth proportional to 124,713.70, 172,102.11 and 68,125.30 is: 94,011.39
Step by Step Solution
- Step 1: Write the proportion equation
124,713.70 : 172,102.11 = 68,125.30 : x - Step 2: Convert to fraction form
124,713.70/172,102.11 = 68,125.30/x - Step 3: Cross multiply
124,713.70x = 172,102.11 × 68,125.30 - Step 4: Simplify right side
124,713.70x = 11,724,507,874.38 - Step 5: Solve for x
x = 11,724,507,874.38/124,713.70 - Step 6: Final answer
x = 94,011.39
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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.