Finding the Fourth Proportional to 99,680.42, 137,524.48 and 63,890.17
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Solution
The fourth proportional to 99,680.42, 137,524.48 and 63,890.17 is: 88,146.32
Step by Step Solution
- Step 1: Write the proportion equation
99,680.42 : 137,524.48 = 63,890.17 : x - Step 2: Convert to fraction form
99,680.42/137,524.48 = 63,890.17/x - Step 3: Cross multiply
99,680.42x = 137,524.48 × 63,890.17 - Step 4: Simplify right side
99,680.42x = 8,786,462,262.21 - Step 5: Solve for x
x = 8,786,462,262.21/99,680.42 - Step 6: Final answer
x = 88,146.32
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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.