Finding the Fourth Proportional to 111,982.68, 154,536.06 and 61,681.68
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Solution
The fourth proportional to 111,982.68, 154,536.06 and 61,681.68 is: 85,120.70
Step by Step Solution
- Step 1: Write the proportion equation
111,982.68 : 154,536.06 = 61,681.68 : x - Step 2: Convert to fraction form
111,982.68/154,536.06 = 61,681.68/x - Step 3: Cross multiply
111,982.68x = 154,536.06 × 61,681.68 - Step 4: Simplify right side
111,982.68x = 9,532,043,801.38 - Step 5: Solve for x
x = 9,532,043,801.38/111,982.68 - Step 6: Final answer
x = 85,120.70
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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.