Finding the Fourth Proportional to 158,642.07, 218,924.68 and 87,020.79
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Solution
The fourth proportional to 158,642.07, 218,924.68 and 87,020.79 is: 120,087.94
Step by Step Solution
- Step 1: Write the proportion equation
158,642.07 : 218,924.68 = 87,020.79 : x - Step 2: Convert to fraction form
158,642.07/218,924.68 = 87,020.79/x - Step 3: Cross multiply
158,642.07x = 218,924.68 × 87,020.79 - Step 4: Simplify right side
158,642.07x = 19,050,998,604.10 - Step 5: Solve for x
x = 19,050,998,604.10/158,642.07 - Step 6: Final answer
x = 120,087.94
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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.