Finding the Fourth Proportional to 158,361.48, 218,538.88 and 86,742.70
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Solution
The fourth proportional to 158,361.48, 218,538.88 and 86,742.70 is: 119,704.95
Step by Step Solution
- Step 1: Write the proportion equation
158,361.48 : 218,538.88 = 86,742.70 : x - Step 2: Convert to fraction form
158,361.48/218,538.88 = 86,742.70/x - Step 3: Cross multiply
158,361.48x = 218,538.88 × 86,742.70 - Step 4: Simplify right side
158,361.48x = 18,956,652,506.18 - Step 5: Solve for x
x = 18,956,652,506.18/158,361.48 - Step 6: Final answer
x = 119,704.95
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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.