Finding the Fourth Proportional to 124,995.18, 172,486.68 and 68,395.62
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Solution
The fourth proportional to 124,995.18, 172,486.68 and 68,395.62 is: 94,382.31
Step by Step Solution
- Step 1: Write the proportion equation
124,995.18 : 172,486.68 = 68,395.62 : x - Step 2: Convert to fraction form
124,995.18/172,486.68 = 68,395.62/x - Step 3: Cross multiply
124,995.18x = 172,486.68 × 68,395.62 - Step 4: Simplify right side
124,995.18x = 11,797,333,420.34 - Step 5: Solve for x
x = 11,797,333,420.34/124,995.18 - Step 6: Final answer
x = 94,382.31
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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.