Finding the Fourth Proportional to 124,781.70, 172,198.84 and 68,193.08
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Solution
The fourth proportional to 124,781.70, 172,198.84 and 68,193.08 is: 94,106.50
Step by Step Solution
- Step 1: Write the proportion equation
124,781.70 : 172,198.84 = 68,193.08 : x - Step 2: Convert to fraction form
124,781.70/172,198.84 = 68,193.08/x - Step 3: Cross multiply
124,781.70x = 172,198.84 × 68,193.08 - Step 4: Simplify right side
124,781.70x = 11,742,769,272.03 - Step 5: Solve for x
x = 11,742,769,272.03/124,781.70 - Step 6: Final answer
x = 94,106.50
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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.