Finding the Fourth Proportional to 128,273.23, 192,430.90 and 39,526.75
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Solution
The fourth proportional to 128,273.23, 192,430.90 and 39,526.75 is: 59,296.61
Step by Step Solution
- Step 1: Write the proportion equation
128,273.23 : 192,430.90 = 39,526.75 : x - Step 2: Convert to fraction form
128,273.23/192,430.90 = 39,526.75/x - Step 3: Cross multiply
128,273.23x = 192,430.90 × 39,526.75 - Step 4: Simplify right side
128,273.23x = 7,606,167,114.42 - Step 5: Solve for x
x = 7,606,167,114.42/128,273.23 - Step 6: Final answer
x = 59,296.61
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.