Finding the Fourth Proportional to 128,527.48, 192,455.88 and 103,430.44
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Solution
The fourth proportional to 128,527.48, 192,455.88 and 103,430.44 is: 154,875.80
Step by Step Solution
- Step 1: Write the proportion equation
128,527.48 : 192,455.88 = 103,430.44 : x - Step 2: Convert to fraction form
128,527.48/192,455.88 = 103,430.44/x - Step 3: Cross multiply
128,527.48x = 192,455.88 × 103,430.44 - Step 4: Simplify right side
128,527.48x = 19,905,796,348.99 - Step 5: Solve for x
x = 19,905,796,348.99/128,527.48 - Step 6: Final answer
x = 154,875.80
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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.