Finding the Fourth Proportional to 138,756.06, 208,133.80 and 107,211.96
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Solution
The fourth proportional to 138,756.06, 208,133.80 and 107,211.96 is: 160,817.72
Step by Step Solution
- Step 1: Write the proportion equation
138,756.06 : 208,133.80 = 107,211.96 : x - Step 2: Convert to fraction form
138,756.06/208,133.80 = 107,211.96/x - Step 3: Cross multiply
138,756.06x = 208,133.80 × 107,211.96 - Step 4: Simplify right side
138,756.06x = 22,314,432,640.25 - Step 5: Solve for x
x = 22,314,432,640.25/138,756.06 - Step 6: Final answer
x = 160,817.72
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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.