Finding the Fourth Proportional to 171,362.18, 236,805.12 and 128,846.90
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Solution
The fourth proportional to 171,362.18, 236,805.12 and 128,846.90 is: 178,053.32
Step by Step Solution
- Step 1: Write the proportion equation
171,362.18 : 236,805.12 = 128,846.90 : x - Step 2: Convert to fraction form
171,362.18/236,805.12 = 128,846.90/x - Step 3: Cross multiply
171,362.18x = 236,805.12 × 128,846.90 - Step 4: Simplify right side
171,362.18x = 30,511,604,432.10 - Step 5: Solve for x
x = 30,511,604,432.10/171,362.18 - Step 6: Final answer
x = 178,053.32
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1.5x scale
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.