Finding the Fourth Proportional to 140,643.06, 194,089.25 and 76,979.49
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Solution
The fourth proportional to 140,643.06, 194,089.25 and 76,979.49 is: 106,232.70
Step by Step Solution
- Step 1: Write the proportion equation
140,643.06 : 194,089.25 = 76,979.49 : x - Step 2: Convert to fraction form
140,643.06/194,089.25 = 76,979.49/x - Step 3: Cross multiply
140,643.06x = 194,089.25 × 76,979.49 - Step 4: Simplify right side
140,643.06x = 14,940,891,479.48 - Step 5: Solve for x
x = 14,940,891,479.48/140,643.06 - Step 6: Final answer
x = 106,232.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.