Finding the Fourth Proportional to 138,242.13, 207,355.91 and 68,097.75
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Solution
The fourth proportional to 138,242.13, 207,355.91 and 68,097.75 is: 102,143.03
Step by Step Solution
- Step 1: Write the proportion equation
138,242.13 : 207,355.91 = 68,097.75 : x - Step 2: Convert to fraction form
138,242.13/207,355.91 = 68,097.75/x - Step 3: Cross multiply
138,242.13x = 207,355.91 × 68,097.75 - Step 4: Simplify right side
138,242.13x = 14,120,470,579.71 - Step 5: Solve for x
x = 14,120,470,579.71/138,242.13 - Step 6: Final answer
x = 102,143.03
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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.