Finding the Fourth Proportional to 145,782.62, 201,196.40 and 81,257.75
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Solution
The fourth proportional to 145,782.62, 201,196.40 and 81,257.75 is: 112,144.82
Step by Step Solution
- Step 1: Write the proportion equation
145,782.62 : 201,196.40 = 81,257.75 : x - Step 2: Convert to fraction form
145,782.62/201,196.40 = 81,257.75/x - Step 3: Cross multiply
145,782.62x = 201,196.40 × 81,257.75 - Step 4: Simplify right side
145,782.62x = 16,348,765,359.83 - Step 5: Solve for x
x = 16,348,765,359.83/145,782.62 - Step 6: Final answer
x = 112,144.82
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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.