Finding the Fourth Proportional to 158,337.19, 218,497.21 and 86,715.68
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Solution
The fourth proportional to 158,337.19, 218,497.21 and 86,715.68 is: 119,663.19
Step by Step Solution
- Step 1: Write the proportion equation
158,337.19 : 218,497.21 = 86,715.68 : x - Step 2: Convert to fraction form
158,337.19/218,497.21 = 86,715.68/x - Step 3: Cross multiply
158,337.19x = 218,497.21 × 86,715.68 - Step 4: Simplify right side
158,337.19x = 18,947,132,833.98 - Step 5: Solve for x
x = 18,947,132,833.98/158,337.19 - Step 6: Final answer
x = 119,663.19
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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.