Finding the Fourth Proportional to 149,202.90, 205,902.62 and 81,221.82
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Solution
The fourth proportional to 149,202.90, 205,902.62 and 81,221.82 is: 112,087.53
Step by Step Solution
- Step 1: Write the proportion equation
149,202.90 : 205,902.62 = 81,221.82 : x - Step 2: Convert to fraction form
149,202.90/205,902.62 = 81,221.82/x - Step 3: Cross multiply
149,202.90x = 205,902.62 × 81,221.82 - Step 4: Simplify right side
149,202.90x = 16,723,785,133.06 - Step 5: Solve for x
x = 16,723,785,133.06/149,202.90 - Step 6: Final answer
x = 112,087.53
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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.