Finding the Fourth Proportional to 122,721.60, 169,343.52 and 68,998.08
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Solution
The fourth proportional to 122,721.60, 169,343.52 and 68,998.08 is: 95,210.44
Step by Step Solution
- Step 1: Write the proportion equation
122,721.60 : 169,343.52 = 68,998.08 : x - Step 2: Convert to fraction form
122,721.60/169,343.52 = 68,998.08/x - Step 3: Cross multiply
122,721.60x = 169,343.52 × 68,998.08 - Step 4: Simplify right side
122,721.60x = 11,684,377,740.44 - Step 5: Solve for x
x = 11,684,377,740.44/122,721.60 - Step 6: Final answer
x = 95,210.44
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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.