Finding the Fourth Proportional to 122,416.43, 168,937.70 and 68,705.53
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Solution
The fourth proportional to 122,416.43, 168,937.70 and 68,705.53 is: 94,815.33
Step by Step Solution
- Step 1: Write the proportion equation
122,416.43 : 168,937.70 = 68,705.53 : x - Step 2: Convert to fraction form
122,416.43/168,937.70 = 68,705.53/x - Step 3: Cross multiply
122,416.43x = 168,937.70 × 68,705.53 - Step 4: Simplify right side
122,416.43x = 11,606,954,215.48 - Step 5: Solve for x
x = 11,606,954,215.48/122,416.43 - Step 6: Final answer
x = 94,815.33
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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.