Finding the Fourth Proportional to 138,031.80, 207,047.70 and 49,327.80
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Solution
The fourth proportional to 138,031.80, 207,047.70 and 49,327.80 is: 73,991.70
Step by Step Solution
- Step 1: Write the proportion equation
138,031.80 : 207,047.70 = 49,327.80 : x - Step 2: Convert to fraction form
138,031.80/207,047.70 = 49,327.80/x - Step 3: Cross multiply
138,031.80x = 207,047.70 × 49,327.80 - Step 4: Simplify right side
138,031.80x = 10,213,207,536.06 - Step 5: Solve for x
x = 10,213,207,536.06/138,031.80 - Step 6: Final answer
x = 73,991.70
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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.