Finding the Fourth Proportional to 210,972.18, 291,139.34 and 120,325.80
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Solution
The fourth proportional to 210,972.18, 291,139.34 and 120,325.80 is: 166,048.31
Step by Step Solution
- Step 1: Write the proportion equation
210,972.18 : 291,139.34 = 120,325.80 : x - Step 2: Convert to fraction form
210,972.18/291,139.34 = 120,325.80/x - Step 3: Cross multiply
210,972.18x = 291,139.34 × 120,325.80 - Step 4: Simplify right side
210,972.18x = 35,031,573,996.97 - Step 5: Solve for x
x = 35,031,573,996.97/210,972.18 - Step 6: Final answer
x = 166,048.31
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1.5x scale
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.