Finding the Fourth Proportional to 138,337.40, 207,506.10 and 98,679.80
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Solution
The fourth proportional to 138,337.40, 207,506.10 and 98,679.80 is: 148,019.70
Step by Step Solution
- Step 1: Write the proportion equation
138,337.40 : 207,506.10 = 98,679.80 : x - Step 2: Convert to fraction form
138,337.40/207,506.10 = 98,679.80/x - Step 3: Cross multiply
138,337.40x = 207,506.10 × 98,679.80 - Step 4: Simplify right side
138,337.40x = 20,476,660,446.78 - Step 5: Solve for x
x = 20,476,660,446.78/138,337.40 - Step 6: Final answer
x = 148,019.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.