Finding the Fourth Proportional to 137,173.08, 189,306.21 and 76,740.12
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Solution
The fourth proportional to 137,173.08, 189,306.21 and 76,740.12 is: 105,905.48
Step by Step Solution
- Step 1: Write the proportion equation
137,173.08 : 189,306.21 = 76,740.12 : x - Step 2: Convert to fraction form
137,173.08/189,306.21 = 76,740.12/x - Step 3: Cross multiply
137,173.08x = 189,306.21 × 76,740.12 - Step 4: Simplify right side
137,173.08x = 14,527,381,340.51 - Step 5: Solve for x
x = 14,527,381,340.51/137,173.08 - Step 6: Final answer
x = 105,905.48
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1.5x scale
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.