Finding the Fourth Proportional to 142,655.56, 196,862.26 and 78,991.99
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Solution
The fourth proportional to 142,655.56, 196,862.26 and 78,991.99 is: 109,007.60
Step by Step Solution
- Step 1: Write the proportion equation
142,655.56 : 196,862.26 = 78,991.99 : x - Step 2: Convert to fraction form
142,655.56/196,862.26 = 78,991.99/x - Step 3: Cross multiply
142,655.56x = 196,862.26 × 78,991.99 - Step 4: Simplify right side
142,655.56x = 15,550,540,294.03 - Step 5: Solve for x
x = 15,550,540,294.03/142,655.56 - Step 6: Final answer
x = 109,007.60
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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.