Finding the Fourth Proportional to 135,147.80, 186,489.68 and 74,708.70
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Solution
The fourth proportional to 135,147.80, 186,489.68 and 74,708.70 is: 103,090.11
Step by Step Solution
- Step 1: Write the proportion equation
135,147.80 : 186,489.68 = 74,708.70 : x - Step 2: Convert to fraction form
135,147.80/186,489.68 = 74,708.70/x - Step 3: Cross multiply
135,147.80x = 186,489.68 × 74,708.70 - Step 4: Simplify right side
135,147.80x = 13,932,401,182.67 - Step 5: Solve for x
x = 13,932,401,182.67/135,147.80 - Step 6: Final answer
x = 103,090.11
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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.