Finding the Fourth Proportional to 143,708.52, 198,318.18 and 79,175.58
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Solution
The fourth proportional to 143,708.52, 198,318.18 and 79,175.58 is: 109,262.53
Step by Step Solution
- Step 1: Write the proportion equation
143,708.52 : 198,318.18 = 79,175.58 : x - Step 2: Convert to fraction form
143,708.52/198,318.18 = 79,175.58/x - Step 3: Cross multiply
143,708.52x = 198,318.18 × 79,175.58 - Step 4: Simplify right side
143,708.52x = 15,701,956,926.04 - Step 5: Solve for x
x = 15,701,956,926.04/143,708.52 - Step 6: Final answer
x = 109,262.53
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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.