Finding the Fourth Proportional to 100,188.72, 138,257.46 and 54,864.99
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Solution
The fourth proportional to 100,188.72, 138,257.46 and 54,864.99 is: 75,712.06
Step by Step Solution
- Step 1: Write the proportion equation
100,188.72 : 138,257.46 = 54,864.99 : x - Step 2: Convert to fraction form
100,188.72/138,257.46 = 54,864.99/x - Step 3: Cross multiply
100,188.72x = 138,257.46 × 54,864.99 - Step 4: Simplify right side
100,188.72x = 7,585,494,160.33 - Step 5: Solve for x
x = 7,585,494,160.33/100,188.72 - Step 6: Final answer
x = 75,712.06
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.