Finding the Fourth Proportional to 140,545.21, 193,952.32 and 76,882.99
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Solution
The fourth proportional to 140,545.21, 193,952.32 and 76,882.99 is: 106,098.49
Step by Step Solution
- Step 1: Write the proportion equation
140,545.21 : 193,952.32 = 76,882.99 : x - Step 2: Convert to fraction form
140,545.21/193,952.32 = 76,882.99/x - Step 3: Cross multiply
140,545.21x = 193,952.32 × 76,882.99 - Step 4: Simplify right side
140,545.21x = 14,911,634,279.04 - Step 5: Solve for x
x = 14,911,634,279.04/140,545.21 - Step 6: Final answer
x = 106,098.49
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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.