Finding the Fourth Proportional to 124,781.64, 172,198.28 and 68,193.02
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Solution
The fourth proportional to 124,781.64, 172,198.28 and 68,193.02 is: 94,106.15
Step by Step Solution
- Step 1: Write the proportion equation
124,781.64 : 172,198.28 = 68,193.02 : x - Step 2: Convert to fraction form
124,781.64/172,198.28 = 68,193.02/x - Step 3: Cross multiply
124,781.64x = 172,198.28 × 68,193.02 - Step 4: Simplify right side
124,781.64x = 11,742,719,550.05 - Step 5: Solve for x
x = 11,742,719,550.05/124,781.64 - Step 6: Final answer
x = 94,106.15
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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.