Finding the Fourth Proportional to 135,862.24, 187,489.90 and 79,262.68
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Solution
The fourth proportional to 135,862.24, 187,489.90 and 79,262.68 is: 109,382.50
Step by Step Solution
- Step 1: Write the proportion equation
135,862.24 : 187,489.90 = 79,262.68 : x - Step 2: Convert to fraction form
135,862.24/187,489.90 = 79,262.68/x - Step 3: Cross multiply
135,862.24x = 187,489.90 × 79,262.68 - Step 4: Simplify right side
135,862.24x = 14,860,951,946.93 - Step 5: Solve for x
x = 14,860,951,946.93/135,862.24 - Step 6: Final answer
x = 109,382.50
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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.