Finding the Fourth Proportional to 158,235.14, 218,359.14 and 86,613.68
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Solution
The fourth proportional to 158,235.14, 218,359.14 and 86,613.68 is: 119,523.95
Step by Step Solution
- Step 1: Write the proportion equation
158,235.14 : 218,359.14 = 86,613.68 : x - Step 2: Convert to fraction form
158,235.14/218,359.14 = 86,613.68/x - Step 3: Cross multiply
158,235.14x = 218,359.14 × 86,613.68 - Step 4: Simplify right side
158,235.14x = 18,912,888,677.04 - Step 5: Solve for x
x = 18,912,888,677.04/158,235.14 - Step 6: Final answer
x = 119,523.95
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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.