Finding the Fourth Proportional to 140,380.19, 193,724.23 and 76,717.99
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Solution
The fourth proportional to 140,380.19, 193,724.23 and 76,717.99 is: 105,870.59
Step by Step Solution
- Step 1: Write the proportion equation
140,380.19 : 193,724.23 = 76,717.99 : x - Step 2: Convert to fraction form
140,380.19/193,724.23 = 76,717.99/x - Step 3: Cross multiply
140,380.19x = 193,724.23 × 76,717.99 - Step 4: Simplify right side
140,380.19x = 14,862,132,860.17 - Step 5: Solve for x
x = 14,862,132,860.17/140,380.19 - Step 6: Final answer
x = 105,870.59
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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.