Finding the Fourth Proportional to 137,204.20, 189,350.58 and 76,781.80
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Solution
The fourth proportional to 137,204.20, 189,350.58 and 76,781.80 is: 105,963.80
Step by Step Solution
- Step 1: Write the proportion equation
137,204.20 : 189,350.58 = 76,781.80 : x - Step 2: Convert to fraction form
137,204.20/189,350.58 = 76,781.80/x - Step 3: Cross multiply
137,204.20x = 189,350.58 × 76,781.80 - Step 4: Simplify right side
137,204.20x = 14,538,678,363.44 - Step 5: Solve for x
x = 14,538,678,363.44/137,204.20 - Step 6: Final answer
x = 105,963.80
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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.