Finding the Fourth Proportional to 149,836.74, 206,775.42 and 81,854.70
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Solution
The fourth proportional to 149,836.74, 206,775.42 and 81,854.70 is: 112,959.88
Step by Step Solution
- Step 1: Write the proportion equation
149,836.74 : 206,775.42 = 81,854.70 : x - Step 2: Convert to fraction form
149,836.74/206,775.42 = 81,854.70/x - Step 3: Cross multiply
149,836.74x = 206,775.42 × 81,854.70 - Step 4: Simplify right side
149,836.74x = 16,925,539,971.47 - Step 5: Solve for x
x = 16,925,539,971.47/149,836.74 - Step 6: Final answer
x = 112,959.88
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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.