Finding the Fourth Proportional to 149,919.68, 206,889.36 and 86,256.20
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Solution
The fourth proportional to 149,919.68, 206,889.36 and 86,256.20 is: 119,033.67
Step by Step Solution
- Step 1: Write the proportion equation
149,919.68 : 206,889.36 = 86,256.20 : x - Step 2: Convert to fraction form
149,919.68/206,889.36 = 86,256.20/x - Step 3: Cross multiply
149,919.68x = 206,889.36 × 86,256.20 - Step 4: Simplify right side
149,919.68x = 17,845,490,014.03 - Step 5: Solve for x
x = 17,845,490,014.03/149,919.68 - Step 6: Final answer
x = 119,033.67
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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.