Finding the Fourth Proportional to 128,077.84, 192,122.25 and 39,334.87
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Solution
The fourth proportional to 128,077.84, 192,122.25 and 39,334.87 is: 59,003.99
Step by Step Solution
- Step 1: Write the proportion equation
128,077.84 : 192,122.25 = 39,334.87 : x - Step 2: Convert to fraction form
128,077.84/192,122.25 = 39,334.87/x - Step 3: Cross multiply
128,077.84x = 192,122.25 × 39,334.87 - Step 4: Simplify right side
128,077.84x = 7,557,103,727.86 - Step 5: Solve for x
x = 7,557,103,727.86/128,077.84 - Step 6: Final answer
x = 59,003.99
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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.