Finding the Fourth Proportional to 138,315.70, 207,473.55 and 68,331.70
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Solution
The fourth proportional to 138,315.70, 207,473.55 and 68,331.70 is: 102,497.55
Step by Step Solution
- Step 1: Write the proportion equation
138,315.70 : 207,473.55 = 68,331.70 : x - Step 2: Convert to fraction form
138,315.70/207,473.55 = 68,331.70/x - Step 3: Cross multiply
138,315.70x = 207,473.55 × 68,331.70 - Step 4: Simplify right side
138,315.70x = 14,177,020,376.54 - Step 5: Solve for x
x = 14,177,020,376.54/138,315.70 - Step 6: Final answer
x = 102,497.55
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1.5x scale
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.