Finding the Fourth Proportional to 117,538.13, 162,271.84 and 71,615.09
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Solution
The fourth proportional to 117,538.13, 162,271.84 and 71,615.09 is: 98,871.00
Step by Step Solution
- Step 1: Write the proportion equation
117,538.13 : 162,271.84 = 71,615.09 : x - Step 2: Convert to fraction form
117,538.13/162,271.84 = 71,615.09/x - Step 3: Cross multiply
117,538.13x = 162,271.84 × 71,615.09 - Step 4: Simplify right side
117,538.13x = 11,621,112,426.07 - Step 5: Solve for x
x = 11,621,112,426.07/117,538.13 - Step 6: Final answer
x = 98,871.00
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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.