Finding the Fourth Proportional to 209,130.68, 313,705.74 and 68,890.52
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Solution
The fourth proportional to 209,130.68, 313,705.74 and 68,890.52 is: 103,338.98
Step by Step Solution
- Step 1: Write the proportion equation
209,130.68 : 313,705.74 = 68,890.52 : x - Step 2: Convert to fraction form
209,130.68/313,705.74 = 68,890.52/x - Step 3: Cross multiply
209,130.68x = 313,705.74 × 68,890.52 - Step 4: Simplify right side
209,130.68x = 21,611,349,987.06 - Step 5: Solve for x
x = 21,611,349,987.06/209,130.68 - Step 6: Final answer
x = 103,338.98
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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.