Finding the Fourth Proportional to 107,204.20, 147,918.14 and 61,872.56
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Solution
The fourth proportional to 107,204.20, 147,918.14 and 61,872.56 is: 85,370.48
Step by Step Solution
- Step 1: Write the proportion equation
107,204.20 : 147,918.14 = 61,872.56 : x - Step 2: Convert to fraction form
107,204.20/147,918.14 = 61,872.56/x - Step 3: Cross multiply
107,204.20x = 147,918.14 × 61,872.56 - Step 4: Simplify right side
107,204.20x = 9,152,073,992.24 - Step 5: Solve for x
x = 9,152,073,992.24/107,204.20 - Step 6: Final answer
x = 85,370.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.