Finding the Fourth Proportional to 115,790.18, 159,739.70 and 68,021.96
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Solution
The fourth proportional to 115,790.18, 159,739.70 and 68,021.96 is: 93,840.49
Step by Step Solution
- Step 1: Write the proportion equation
115,790.18 : 159,739.70 = 68,021.96 : x - Step 2: Convert to fraction form
115,790.18/159,739.70 = 68,021.96/x - Step 3: Cross multiply
115,790.18x = 159,739.70 × 68,021.96 - Step 4: Simplify right side
115,790.18x = 10,865,806,345.00 - Step 5: Solve for x
x = 10,865,806,345.00/115,790.18 - Step 6: Final answer
x = 93,840.49
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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.