Finding the Fourth Proportional to 210,125.36, 289,890.46 and 129,412.81
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Solution
The fourth proportional to 210,125.36, 289,890.46 and 129,412.81 is: 178,538.84
Step by Step Solution
- Step 1: Write the proportion equation
210,125.36 : 289,890.46 = 129,412.81 : x - Step 2: Convert to fraction form
210,125.36/289,890.46 = 129,412.81/x - Step 3: Cross multiply
210,125.36x = 289,890.46 × 129,412.81 - Step 4: Simplify right side
210,125.36x = 37,515,539,020.79 - Step 5: Solve for x
x = 37,515,539,020.79/210,125.36 - Step 6: Final answer
x = 178,538.84
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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.