Finding the Fourth Proportional to 137,402.53, 189,605.61 and 76,962.96
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Solution
The fourth proportional to 137,402.53, 189,605.61 and 76,962.96 is: 106,203.35
Step by Step Solution
- Step 1: Write the proportion equation
137,402.53 : 189,605.61 = 76,962.96 : x - Step 2: Convert to fraction form
137,402.53/189,605.61 = 76,962.96/x - Step 3: Cross multiply
137,402.53x = 189,605.61 × 76,962.96 - Step 4: Simplify right side
137,402.53x = 14,592,608,978.21 - Step 5: Solve for x
x = 14,592,608,978.21/137,402.53 - Step 6: Final answer
x = 106,203.35
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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.