Finding the Fourth Proportional to 135,647.73, 187,156.29 and 78,283.02
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Solution
The fourth proportional to 135,647.73, 187,156.29 and 78,283.02 is: 108,008.88
Step by Step Solution
- Step 1: Write the proportion equation
135,647.73 : 187,156.29 = 78,283.02 : x - Step 2: Convert to fraction form
135,647.73/187,156.29 = 78,283.02/x - Step 3: Cross multiply
135,647.73x = 187,156.29 × 78,283.02 - Step 4: Simplify right side
135,647.73x = 14,651,159,593.20 - Step 5: Solve for x
x = 14,651,159,593.20/135,647.73 - Step 6: Final answer
x = 108,008.88
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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.