Finding the Fourth Proportional to 103,616.21, 155,424.30 and 68,547.66
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Solution
The fourth proportional to 103,616.21, 155,424.30 and 68,547.66 is: 102,821.49
Step by Step Solution
- Step 1: Write the proportion equation
103,616.21 : 155,424.30 = 68,547.66 : x - Step 2: Convert to fraction form
103,616.21/155,424.30 = 68,547.66/x - Step 3: Cross multiply
103,616.21x = 155,424.30 × 68,547.66 - Step 4: Simplify right side
103,616.21x = 10,653,972,072.14 - Step 5: Solve for x
x = 10,653,972,072.14/103,616.21 - Step 6: Final answer
x = 102,821.49
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1.5x scale
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.