Finding the Fourth Proportional to 158,429.93, 218,641.68 and 86,812.97
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Solution
The fourth proportional to 158,429.93, 218,641.68 and 86,812.97 is: 119,806.49
Step by Step Solution
- Step 1: Write the proportion equation
158,429.93 : 218,641.68 = 86,812.97 : x - Step 2: Convert to fraction form
158,429.93/218,641.68 = 86,812.97/x - Step 3: Cross multiply
158,429.93x = 218,641.68 × 86,812.97 - Step 4: Simplify right side
158,429.93x = 18,980,932,513.38 - Step 5: Solve for x
x = 18,980,932,513.38/158,429.93 - Step 6: Final answer
x = 119,806.49
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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.