Finding the Fourth Proportional to 129,997.99, 179,398.41 and 76,283.90
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Solution
The fourth proportional to 129,997.99, 179,398.41 and 76,283.90 is: 105,272.48
Step by Step Solution
- Step 1: Write the proportion equation
129,997.99 : 179,398.41 = 76,283.90 : x - Step 2: Convert to fraction form
129,997.99/179,398.41 = 76,283.90/x - Step 3: Cross multiply
129,997.99x = 179,398.41 × 76,283.90 - Step 4: Simplify right side
129,997.99x = 13,685,210,368.60 - Step 5: Solve for x
x = 13,685,210,368.60/129,997.99 - Step 6: Final answer
x = 105,272.48
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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.