Finding the Fourth Proportional to 100,021.80, 149,770.26 and 64,854.84
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Solution
The fourth proportional to 100,021.80, 149,770.26 and 64,854.84 is: 97,112.09
Step by Step Solution
- Step 1: Write the proportion equation
100,021.80 : 149,770.26 = 64,854.84 : x - Step 2: Convert to fraction form
100,021.80/149,770.26 = 64,854.84/x - Step 3: Cross multiply
100,021.80x = 149,770.26 × 64,854.84 - Step 4: Simplify right side
100,021.80x = 9,713,326,249.06 - Step 5: Solve for x
x = 9,713,326,249.06/100,021.80 - Step 6: Final answer
x = 97,112.09
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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.