Finding the Fourth Proportional to 129,779.50, 179,095.75 and 70,163.50
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Solution
The fourth proportional to 129,779.50, 179,095.75 and 70,163.50 is: 96,825.65
Step by Step Solution
- Step 1: Write the proportion equation
129,779.50 : 179,095.75 = 70,163.50 : x - Step 2: Convert to fraction form
129,779.50/179,095.75 = 70,163.50/x - Step 3: Cross multiply
129,779.50x = 179,095.75 × 70,163.50 - Step 4: Simplify right side
129,779.50x = 12,565,984,655.13 - Step 5: Solve for x
x = 12,565,984,655.13/129,779.50 - Step 6: Final answer
x = 96,825.65
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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.