Finding the Fourth Proportional to 128,252.05, 192,398.76 and 39,505.52
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Solution
The fourth proportional to 128,252.05, 192,398.76 and 39,505.52 is: 59,264.66
Step by Step Solution
- Step 1: Write the proportion equation
128,252.05 : 192,398.76 = 39,505.52 : x - Step 2: Convert to fraction form
128,252.05/192,398.76 = 39,505.52/x - Step 3: Cross multiply
128,252.05x = 192,398.76 × 39,505.52 - Step 4: Simplify right side
128,252.05x = 7,600,813,542.15 - Step 5: Solve for x
x = 7,600,813,542.15/128,252.05 - Step 6: Final answer
x = 59,264.66
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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.