Finding the Fourth Proportional to 158,258.24, 218,396.36 and 86,638.26
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Solution
The fourth proportional to 158,258.24, 218,396.36 and 86,638.26 is: 119,560.79
Step by Step Solution
- Step 1: Write the proportion equation
158,258.24 : 218,396.36 = 86,638.26 : x - Step 2: Convert to fraction form
158,258.24/218,396.36 = 86,638.26/x - Step 3: Cross multiply
158,258.24x = 218,396.36 × 86,638.26 - Step 4: Simplify right side
158,258.24x = 18,921,480,620.73 - Step 5: Solve for x
x = 18,921,480,620.73/158,258.24 - Step 6: Final answer
x = 119,560.79
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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.