Finding the Fourth Proportional to 158,439.24, 218,648.34 and 86,817.96
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Solution
The fourth proportional to 158,439.24, 218,648.34 and 86,817.96 is: 119,809.98
Step by Step Solution
- Step 1: Write the proportion equation
158,439.24 : 218,648.34 = 86,817.96 : x - Step 2: Convert to fraction form
158,439.24/218,648.34 = 86,817.96/x - Step 3: Cross multiply
158,439.24x = 218,648.34 × 86,817.96 - Step 4: Simplify right side
158,439.24x = 18,982,602,836.19 - Step 5: Solve for x
x = 18,982,602,836.19/158,439.24 - Step 6: Final answer
x = 119,809.98
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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.