Finding the Fourth Proportional to 136,176.22, 187,909.99 and 78,804.14
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Solution
The fourth proportional to 136,176.22, 187,909.99 and 78,804.14 is: 108,742.08
Step by Step Solution
- Step 1: Write the proportion equation
136,176.22 : 187,909.99 = 78,804.14 : x - Step 2: Convert to fraction form
136,176.22/187,909.99 = 78,804.14/x - Step 3: Cross multiply
136,176.22x = 187,909.99 × 78,804.14 - Step 4: Simplify right side
136,176.22x = 14,808,085,432.12 - Step 5: Solve for x
x = 14,808,085,432.12/136,176.22 - Step 6: Final answer
x = 108,742.08
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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.