Finding the Fourth Proportional to 123,860.49, 170,898.19 and 72,875.44
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Solution
The fourth proportional to 123,860.49, 170,898.19 and 72,875.44 is: 100,550.88
Step by Step Solution
- Step 1: Write the proportion equation
123,860.49 : 170,898.19 = 72,875.44 : x - Step 2: Convert to fraction form
123,860.49/170,898.19 = 72,875.44/x - Step 3: Cross multiply
123,860.49x = 170,898.19 × 72,875.44 - Step 4: Simplify right side
123,860.49x = 12,454,280,427.08 - Step 5: Solve for x
x = 12,454,280,427.08/123,860.49 - Step 6: Final answer
x = 100,550.88
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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.