Finding the Fourth Proportional to 100,525.27, 138,607.68 and 74,987.31
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Solution
The fourth proportional to 100,525.27, 138,607.68 and 74,987.31 is: 103,395.06
Step by Step Solution
- Step 1: Write the proportion equation
100,525.27 : 138,607.68 = 74,987.31 : x - Step 2: Convert to fraction form
100,525.27/138,607.68 = 74,987.31/x - Step 3: Cross multiply
100,525.27x = 138,607.68 × 74,987.31 - Step 4: Simplify right side
100,525.27x = 10,393,816,188.03 - Step 5: Solve for x
x = 10,393,816,188.03/100,525.27 - Step 6: Final answer
x = 103,395.06
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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.