Finding the Fourth Proportional to 107,654.99, 148,409.90 and 75,724.79
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Solution
The fourth proportional to 107,654.99, 148,409.90 and 75,724.79 is: 104,391.89
Step by Step Solution
- Step 1: Write the proportion equation
107,654.99 : 148,409.90 = 75,724.79 : x - Step 2: Convert to fraction form
107,654.99/148,409.90 = 75,724.79/x - Step 3: Cross multiply
107,654.99x = 148,409.90 × 75,724.79 - Step 4: Simplify right side
107,654.99x = 11,238,307,390.75 - Step 5: Solve for x
x = 11,238,307,390.75/107,654.99 - Step 6: Final answer
x = 104,391.89
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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.