Finding the Fourth Proportional to 138,040.19, 207,108.88 and 67,968.71
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Solution
The fourth proportional to 138,040.19, 207,108.88 and 67,968.71 is: 101,976.99
Step by Step Solution
- Step 1: Write the proportion equation
138,040.19 : 207,108.88 = 67,968.71 : x - Step 2: Convert to fraction form
138,040.19/207,108.88 = 67,968.71/x - Step 3: Cross multiply
138,040.19x = 207,108.88 × 67,968.71 - Step 4: Simplify right side
138,040.19x = 14,076,923,403.14 - Step 5: Solve for x
x = 14,076,923,403.14/138,040.19 - Step 6: Final answer
x = 101,976.99
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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.