Finding the Fourth Proportional to 137,115.08, 189,204.18 and 76,679.48
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Solution
The fourth proportional to 137,115.08, 189,204.18 and 76,679.48 is: 105,809.50
Step by Step Solution
- Step 1: Write the proportion equation
137,115.08 : 189,204.18 = 76,679.48 : x - Step 2: Convert to fraction form
137,115.08/189,204.18 = 76,679.48/x - Step 3: Cross multiply
137,115.08x = 189,204.18 × 76,679.48 - Step 4: Simplify right side
137,115.08x = 14,508,078,136.23 - Step 5: Solve for x
x = 14,508,078,136.23/137,115.08 - Step 6: Final answer
x = 105,809.50
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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.