Finding the Fourth Proportional to 129,487.23, 178,697.36 and 75,041.26
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Solution
The fourth proportional to 129,487.23, 178,697.36 and 75,041.26 is: 103,559.83
Step by Step Solution
- Step 1: Write the proportion equation
129,487.23 : 178,697.36 = 75,041.26 : x - Step 2: Convert to fraction form
129,487.23/178,697.36 = 75,041.26/x - Step 3: Cross multiply
129,487.23x = 178,697.36 × 75,041.26 - Step 4: Simplify right side
129,487.23x = 13,409,675,053.07 - Step 5: Solve for x
x = 13,409,675,053.07/129,487.23 - Step 6: Final answer
x = 103,559.83
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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.