Finding the Fourth Proportional to 155,142.99, 232,818.36 and 66,418.20
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Solution
The fourth proportional to 155,142.99, 232,818.36 and 66,418.20 is: 99,671.77
Step by Step Solution
- Step 1: Write the proportion equation
155,142.99 : 232,818.36 = 66,418.20 : x - Step 2: Convert to fraction form
155,142.99/232,818.36 = 66,418.20/x - Step 3: Cross multiply
155,142.99x = 232,818.36 × 66,418.20 - Step 4: Simplify right side
155,142.99x = 15,463,376,398.15 - Step 5: Solve for x
x = 15,463,376,398.15/155,142.99 - Step 6: Final answer
x = 99,671.77
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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.