Finding the Fourth Proportional to 135,147.30, 186,488.98 and 74,708.20
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Solution
The fourth proportional to 135,147.30, 186,488.98 and 74,708.20 is: 103,089.41
Step by Step Solution
- Step 1: Write the proportion equation
135,147.30 : 186,488.98 = 74,708.20 : x - Step 2: Convert to fraction form
135,147.30/186,488.98 = 74,708.20/x - Step 3: Cross multiply
135,147.30x = 186,488.98 × 74,708.20 - Step 4: Simplify right side
135,147.30x = 13,932,256,015.64 - Step 5: Solve for x
x = 13,932,256,015.64/135,147.30 - Step 6: Final answer
x = 103,089.41
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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.