Finding the Fourth Proportional to 138,230.70, 207,346.05 and 68,246.70
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Solution
The fourth proportional to 138,230.70, 207,346.05 and 68,246.70 is: 102,370.05
Step by Step Solution
- Step 1: Write the proportion equation
138,230.70 : 207,346.05 = 68,246.70 : x - Step 2: Convert to fraction form
138,230.70/207,346.05 = 68,246.70/x - Step 3: Cross multiply
138,230.70x = 207,346.05 × 68,246.70 - Step 4: Simplify right side
138,230.70x = 14,150,683,670.54 - Step 5: Solve for x
x = 14,150,683,670.54/138,230.70 - Step 6: Final answer
x = 102,370.05
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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.