Finding the Fourth Proportional to 158,340.68, 218,502.01 and 86,719.16
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Solution
The fourth proportional to 158,340.68, 218,502.01 and 86,719.16 is: 119,667.99
Step by Step Solution
- Step 1: Write the proportion equation
158,340.68 : 218,502.01 = 86,719.16 : x - Step 2: Convert to fraction form
158,340.68/218,502.01 = 86,719.16/x - Step 3: Cross multiply
158,340.68x = 218,502.01 × 86,719.16 - Step 4: Simplify right side
158,340.68x = 18,948,310,982.31 - Step 5: Solve for x
x = 18,948,310,982.31/158,340.68 - Step 6: Final answer
x = 119,667.99
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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.